Minn. Stat. § 97B.811
Subd. 1. Blinds and decoys prohibited before season.
A person may not erect a blind or place decoys in public waters or on public land more than one hour before the open season for waterfowl.
Subd. 2. Hours for placing decoys.
Except as provided in subdivisions 3 and 4, a person may not place decoys in public waters or on public lands more than one hour before lawful shooting hours for waterfowl.
Subd. 3. Restrictions on leaving decoys overnight.
During the open season for waterfowl, a person may not leave decoys in public waters between sunset and one hour before lawful shooting hours unless:
Subd. 4. Decoys that are navigational hazard prohibited.
A person may not leave decoys in public waters between sunset and one hour before lawful shooting hours if the decoys constitute a navigational hazard.
Subd. 5. Rules governing blinds.
The commissioner may adopt rules for the use of blinds on public lands and public waters.