S.C. Code Ann. § 50-25-1330
(A) Watercraft may not operate on Lake H. Taylor Blalock with an engine greater than thirty horsepower or greater than twenty-five feet in length, and in the case of a pontoon boat, the engine may not be greater than forty horsepower or greater than twenty-five feet in length, unless:
(B) It is unlawful on Lake H. Taylor Blalock to: