Michigan Compiled Laws, Chapter 324. Natural Resources and Environmental Protection § 324.48731

Sec. 48731. (1) Except as otherwise provided in this subsection, minnow seines of not more than 125 feet in length and 16 feet in width may be used in the Great Lakes and their connecting waterways and in the inland lakes, streams, and rivers of this state. Minnows may only be taken from trout streams during open season with glass or wire traps. Minnow seines shall not be used in trout streams at any time.

(2) Hand nets not exceeding 8 feet square without sides or walls, minnow traps not exceeding 2 feet in length, minnow seines not exceeding 12 feet in length and 4 feet in width, and hook and line may be used for taking minnows for personal use in any of the waters designated by the department, as provided in section 48730.  1 However, a person shall not take minnows in trout streams with hand or dip nets.