The following is from the Department of Natural Resources website and can be found here.
“A person placing a shanty on the ice for fishing shall permanently affix their name and address on all sides of the shanty in legible letters at least 2 inches in height. The letters shall be readily visible and consist of material not soluble in water. The name and address must be on the shanty and may not be placed on a board or other material that is then attached to the shanty. Tents or other temporary shelters that are removed from the ice each day do not require identification.
Persons placing a shanty on waters in the counties of Alcona, Alpena, Antrim, Arenac, Bay, Benzie, Charlevoix, Cheboygan, Clare, Crawford, Emmet, Gladwin, Grand Traverse, Iosco, Isabella, Kalkaska, Lake, Leelanau, Manistee, Mason, Mecosta, Midland, Missaukee, Montmorency, Newaygo, Oceana, Ogemaw, Osceola, Oscoda, Otsego, Presque Isle, Roscommon, or Wexford shall remove the shanty by midnight of March 15 of any year.
In all areas, a shanty must be removed if ice conditions become unsafe, regardless of the date. After the above dates, a shanty must be removed at the end of each day’s fishing activity.“