Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.80209

Sec. 80209. (1) Except when traveling at slow--no wake speed perpendicular to the shoreline, a person who operates a personal watercraft on 1 of the Great Lakes that is under the jurisdiction of this state shall maintain a distance of 200 feet from the shoreline.

(2) Except as provided in subsection (4), a person who operates a personal watercraft or a person who is being towed by a personal watercraft on a water sled, kite, surfboard, parachute, tube, water ski, or similar equipment on the waters of this state shall maintain a distance of not less than 100 feet from a dock, raft, or buoyed or occupied bathing or swimming area, a person in the water or on the water in a personal flotation device, or a vessel moored, anchored, drifting, or sitting in dead water.

(3) A person who operates a personal watercraft or a person who is being towed by a personal watercraft on a water sled, kite, surfboard, parachute, tube, water ski, or similar equipment on the waters of this state shall maintain a distance of not less than 200 feet from a submerged diver, vessel engaged in underwater diving activities, or a flotation device displaying the international diving insignia.

(4) Subsection (2) does not apply under either of the following conditions: