This is a quote for the Michigan DNR's web site. You do need the opermission of the property owner that owns the frontage even if you are not anchord. Heres the quote.
G. Right to Take Game - Generally
The right to take game is a private property right vested solely in the property owner. This is unlike the right to fish which arises by the establishment of public water through its use, as well as the waters capacity for use in transportation and travel, and from the fact that there is no private ownership in the fish or in the right to take fish from public waters. Being a private property right, the taking of game is lawful only with the permission of the property owner.
The picture is best summed up by example. The public has a legal right to fish from a boat during open season on public waters, but this right would not include the shooting of ducks from the same boat without permission of the riparian owner, even though the shooting season was open. This violates a property right.
H. Hunting and Trapping on Submerged Lands - Riparian Rights
It has been well established in Michigan, that the owner of lands bordering on a navigable stream or lake, with the exception of the Great Lakes, owns the submerged lands to the thread of the stream, subject only to the easement of navigation which the public may have thereon, and that he also owns the ice covering the surface of the water over the submerged lands and any interference with these rights constitutes a trespass.
The right of trapping is a property interest and the riparian owner of lands has the exclusive right to trap. In an enforcement action against a trespasser the landowner is entitled to the remedies available under Part 731, Recreational Trespass.
As a waterfowl hunters it is your responsibility to gain permission when hunting on public waters surrounded by private land other then the Great Lakes.
here is the web address to this document. http://www.michigan.gov/dnr/0,1607,7-15 ... --,00.html