Mich. Comp. Laws § 324.47344
A person shall not catch or take fish of any kind with a net or other device of any kind, except hook and line and spear as permitted by law, from that part of Thunder Bay in Lake Huron, lying inside, or south and west of a straight line extending from the mouth of Thunder Bay river to the center of Surplur Island; thence south and east to the north and south line between sections 20 and 21 in township 29 north, of range 9 east, in the state of Michigan, where said line intersects the waters of the said lake, excepting therefrom that part of said Thunder Bay in front of sections 2, 11 and 12 in township 29 north, of range 8 east, and sections 34 and 35 in township 30 north, of range 8 east. However, no net or other device of any kind, except hook and line and spear as permitted by law, shall be used by any person to take or catch fish in that part of the waters of said Thunder Bay within 1/2 mile of the mouth in any direction of any stream that discharges its waters into that portion of said Thunder Bay.
MCL 324.47344