*308 OPINION
The trial court found appellant guilty of boating while intoxicated and sentenced him to 180 days’ confinement plus a $500 fine. In two points, he argues that the enforcement provision of the Water Safety Act (the Act) 1 violates the Fourth Amendment to the United States Constitution and that he was denied a speedy trial. We affirm.
I. Background
Around midnight on September 3, 1995, Texas Game Warden Patrick C. Canan was patrolling Lake Lewisville in his marked state patrol boat. He saw appellant leaving Sneaky Pete’s Marina driving a 20 foot, 1993 Stingray. Under the authority of section 31.124(a) of the Act, Can-an stopped and boarded appellant’s boat to check for water safety equipment. Canan noticed that appellant was having trouble answering Canan’s questions, that he was fumbling with his fingers, and that he smelled of alcohol. Canan performed a horizontal gaze nystagmus test on appellant and detected positive indications of intoxication. Canan requested that appellant follow him to shore for more sobriety tests. Appellant’s performance on the additional tests indicated that he was intoxicated. Accordingly, Canan arrested appellant for boating while intoxicated. See Tex. Penal Code Ann. § 49.06 (Vernon 1994).
Appellant filed a motion to suppress the evidence of intoxication obtained as the result of Canan stopping his boat, and a motion to dismiss alleging that he was deprived of his right to a speedy trial. The trial court denied both motions. On July 2, 1998, appellant pleaded nolo con-tendere, and the trial court sentenced him to 180 days’ confinement.
II. Constitutionality of § 31.124
A. The Statute
In his first point, appellant contends that the trial court erred in failing to grant his motion to suppress evidence obtained as a result of his boat being stopped. Appellant argues that section 31.124(a) of the Act violates the Fourth Amendment prohibition against unreasonable search and seizure. Section 31.124(a) states:
In order to enforce the provisions of this chapter, 2 an enforcement .officer may stop and board any vessel subject to this chapter and may inspect the boat to determine compliance with applicable provisions.
Tex. PARKS & Wild.Code Ann. § 31.124(a) (Vernon 1991).
The facts, as previously recited, are not disputed. Whether section 31.124(a) violates the Fourth Amendment is a purely legal question that we may review de novo.
See Guzman v. State,
B. Suspicionless Seizure
It is uncontested that a Fourth Amendment seizure took place. A person is “seized” within the meaning of the Fourth Amendment when the person is subjected to application of physical force or the person submits to an assertion of authority.
See California v. Hodari D.,
The Fourth Amendment does not prohibit all searches and seizures, only those that are deemed unreasonable.
See Elkins v. United States,
A suspicionless search and seizure under the Fourth Amendment is one that occurs in the absence of a warrant and without probable cause or reasonable suspicion.
See Sanchez,
Though none of these cases are directly on point, they share a common theme. That common theme, and the standard we apply here, is most succinctly stated in
Prouse.
In determining whether Delaware Police could, without probable cause or reasonable suspicion, stop automobile drivers to check for a valid driver’s license and registration, the Court stated that, “[T]he permissibility of a particular law enforcement practice is judged by balancing its intrusion on the individual’s Fourth Amendment interests against its promotion of legitimate governmental interests.”
Prouse,
C. Application
State Interest
The State interest is given at section 31.002:
It is the duty of this state to promote recreational water safety for persons and property in and connected with the use of all recreational water facilities in the state, to promote safety in the operation and equipment of facilities, and to promote uniformity of laws relating to water safety.
Tex. Parks & Wild.Code Ann. § 31.002 (Vernon 1991).
The State has a vital interest in protecting the safety of its citizens. States have traditionally had great latitude under their police powers to legislate to protect the “lives, limbs, health, comfort, and quiet of all persons.”
Metropolitan Life Ins. Co. v. Massachusetts,
Level of Intrusion
In weighing the level of intrusion, we consider the individual’s expectation of privacy, the length and scope of the detention, the alternative means available in light of the statute’s contribution to the state interest, and the discretion given law enforcement officials.
See generally Prouse,
Appellant had an expectation of privacy in his boat. He had a possessory interest, was legitimately in the boat, had control of the boat, and had the right to exclude others.
See generally Calloway v. State,
The scope and length of the detention here were not intrusive. The enforcement provision authorizes detention only for the purpose of ensuring compliance with the registration and safety requirements. See Tex. Parks & Wild.Code Ann. § 31.124. The intrusion is minimal in scope because the search may only be directed at the safety items listed in the statute. Further, while the boat must carry several safety and registration items, only a brief visual inspection is necessary to determine compliance. Therefore, the scope and length of the seizure favor a finding that the intrusion is minimal.
The Court in
Prouse
based its decision, at least in part, on the existence of available alternative means of detecting license-less drivers.
See Prouse,
Additionally, the Court considered outward indications of compliance with registration and safety requirements. For example, the Court noted that in Delaware, license plates were evidence that a vehicle was properly registered and had passed required safety inspections.
See id.
The Court opined in dicta that a possible alternative to spot checks was questioning all oncoming traffic at a fixed checkpoint, akin to those used in border patrol checkpoints.
See id.
at 663,
The alternative mechanisms available in Prouse are not present here. Some of the required safety equipment is not capable of outward observation. For example, life jackets and fire extinguishers may be secreted and are also readily detachable. It may well be impossible to observe from a distance that a boater is not carrying the proper number of life jackets or a fire extinguisher. Additionally, though required numbering on the boat is evidence of proper registration, there is no safety inspection on which registration is contingent. Thus, unlike license plates on a car, the numbers on a boat do not indicate compliance with safety requirements.
Further, fixed checkpoints are not a viable alternative. As the Supreme Court noted in
Villamonte-Marquez,
“vessels can move in any direction at any time and need not follow established ‘avenues’ as automobiles must do.”
Finally, we consider the discretion given law enforcement. The Act’s enforcement provision applies to “all vessels on public water,” and a stop may be made at any time. Tex. Parks
&
Wild.Code Ann. § 31.004 (Vernon Supp.1999). Under the statute, there are no restrictions on a law enforcement officer’s discretion. This unfettered discretion conflicts with the Supreme Court’s repeated insistence, when construing the Fourth Amendment, that “the discretion of the official in the field be circumscribed, at least to some extent.”
See Prouse,
This does not, however, render the intrusion unreasonable under the Fourth Amendment. Although the level of intrusion is escalated by the lack of restraint on the discretion of individual law enforcement officials, it does not rise to an unreasonable level. The reduced expectation of privacy in a boat, the brevity of the encounter, and the lack of alternative means render the level of intrusion reasonable under the circumstances.
Balancing the State’s substantial interest in recreational water safety against the intrusion involved, the enforcement provision of the Act does not authorize searches and seizures that violate the Fourth Amendment. Accordingly, we hold that *312 section 31.124 is constitutional and we overrule appellant’s first point.
III. Speedy Trial
In his second point, appellant argues he was denied his right to a speedy trial. Whether appellant was denied a speedy trial is a purely legal question subject to de novo review, and, like appellant’s first point, involves a balancing test.
See Johnson v. State,
A.Length of Delay
To trigger a speedy trial analysis, the defendant has the burden of first demonstrating a delay sufficient in length to be considered presumptively prejudicial under the circumstances of the case.
See Barker,
Appellant was arrested on September 3, 1995 and tried on July 2,1998. Thus, from arrest to trial, two years, ten months and twenty-nine days elapsed. In its brief, the State concedes, correctly, that this delay is sufficient to trigger consideration of the remaining Barker factors.
B. Reasons for the Delay
At the hearing on appellant’s motion to dismiss for lack of a speedy trial, the trial court determined that the State was not to blame for the delay. The court noted that, at the time of the hearing, the misdemean- or courts in Denton County had over 2,500 requests for jury trial. The court also noted that the State announced “ready for trial” on the day it filed the information, August 27, 1996. The trial court placed the blame on the court system, noting “[fits due to no fault of the State of Texas that his case has not been brought to a jury trial, brought to fruition at this time. Its due to ... the backlog of cases that we have currently pending in our courts.”
Overcrowded docket is a neutral reason for delay.
See Barker,
C. Assertion of the Right
We next consider whether appellant diligently asserted his right to a speedy trial. On May 5, 1997, appellant moved to set a trial date. One year later, on May 5, 1998, appellant moved to dismiss the case for lack of a speedy trial.
Assertion of the right to a speedy trial is a weighty factor in the
Barker
balancing test.
See Barker,
407
*313
U.S. at 531-32,
Here, appellant never asserted his right to a speedy trial. Appellant was arrested on September 3,1995. The State filed the complaint and information on August 27, 1996. Nothing in the record indicates that appellant complained of lack of a speedy trial during that period. On February 10, 1997, the State moved for a continuance. Appellant did not object. On May 5, 1997 — twenty months after his arrest— appellant asked for a trial date. He did not, however, assert his right to a speedy trial. Finally, when appellant finally did raise his right to a speedy trial, he did not ask for a trial, he moved to dismiss the case based on a lack of one. Appellant’s failure to diligently and persistently assert the right, coupled with his moving to dismiss rather than asking for a speedy trial, cause the third
Barker
factor to weigh against him.
See Barker,
D. Prejudice
The final
Barker
factor to consider is prejudice to the accused. The prejudice factor must be assessed in the light of the interests of defendants which the speedy trial right was designed to protect: (1) to prevent oppressive pretrial incarceration; (2) to minimize anxiety and concern of the accused; and (3) to limit the possibility that the defense will be impaired.
See Harris v. State,
Appellant was incarcerated on the night of his arrest, but not thereafter. Thus, there was no oppressive pretrial incarceration.
As to appellant’s anxiety, he testified at the hearing on his motion to dismiss that the delay in bringing him to trial put him on “pins and needles” the whole time. The State fails to effectively rebut appellant’s testimony regarding his anxiety, arguing only that he did not present evidence establishing that he suffered anxiety to a harmful degree.
Regarding impairment of a defense, appellant argues that there were two witnesses who had been with him the night of his arrest. Appellant argues that these witnesses would have testified in his behalf, but that he could no longer locate them.
In order to show prejudice caused by lost testimony, appellant must show: (1) the witness was unavailable at the time of. trial; (2) the testimony that would have been offered was relevant and material to the defense; and (3) due diligence was exercised in an attempt to locate the witnesses for trial.
See Parkerson v. State,
*314 Appellant was not oppressed by pretrial incarceration and has not shown that his defense has been impaired by the delay. Though appellant has established, and the State has failed to rebut, the anxiety element, it is not enough to cause the prejudice prong to weigh in appellant’s favor.
The length of delay from arrest to trial in this case is suspect.* The State’s reason for delay weighs in appellant’s favor, but only slightly. Conversely, appellant’s failure to diligently and persistently assert the right, coupled with the lack of prejudice, tip the scale in favor of the State. Accordingly, we hold that appellant was not denied his constitutional right to a speedy trial and overrule his second point.
Conclusion
Having overruled appellant’s points, we affirm the trial court’s judgment.
Notes
. See Tex Parks & Wild.Code Ann. §§ 31.001, 31.124 (Vernon 1991).
. The chapter requires a boat operator to carry a certificate of number, and requires the boat to have proper numbering, lights, whistles and bells, life preservers, fire extinguishers, flame arrestors,' ventilators, a muffler, and rearview mirrors. See Tex Parks & Wild. Code Ann. §§ 31.021 (Vernon Supp.1999), 31.028 (Vernon 1991), 31.064-.066 (Vernon Supp.1999), 31.067-.071 (Vernon 1991).
. Though slighdy different tests have been applied, all suspicionless search and seizure cases balance governmental interest against individual intrusion in some fashion.
See Vernonia Sch. Dist.,
