515 ILCS 5/10-85
Fish may be taken through the ice by the use of not more than 3 poles and lines or 3 tipups at any one time and there may be not more than 2 hooks attached to each line. Any hole cut in the ice for the purpose of taking fish shall be not more than 12 inches in diameter. Any shelter placed or used on ice of any of the public waters of this State shall be a portable fishing shelter constructed of a frame-work of metal or wood covered with canvas, paper, wood, plastic material, or any similar material and that shelter shall have the name and address of the owner attached to it. Following March 1 of each ice fishing season the shelter must be removed at the end of each fishing day and shall not be left unattended at any time after that date.
All fishing devices placed through the ice shall be attended and kept under the observation of the person having so placed the device at all times.
515 ILCS 5/10-85