(1) No person may discharge any firearm, fireworks, explosives, air or gas weapon, or arrow from a bow, on or over either land or water, from April 1 to the opening date of archery season each year, unless the designated area is otherwise posted. Areas, or portions of areas, may be closed to shooting when the director determines there is undue hazard to human life or property. In addition to any other penalties provided for violation, the participant may be expelled from the area.