Mich. Comp. Laws § 691.1732

Sec. 2. As used in this act: (a) "Institutional trampoline" means a trampoline court trampoline intended for use in a commercial or institutional facility. (b) "Operator" means a person that owns or controls or that has operational responsibility for a trampoline court. (c) "Spectator" means an individual who is present in a trampoline court only for the purpose of observing trampoline court activity, whether recreational or competitive. (d) "Trampoline court" means a defined area that contains 1 or more institutional trampolines or a series of institutional trampolines, a trampoline court foam pit, or a series of trampoline court foam pits. (e) "Trampoline court foam pit" means a combination style dismount pit designed with a rebound device, covered with loose impact-absorbing blocks used in a trampoline court intended for use in a commercial or institutional facility. (f) "Trampoline court trampoline" means a rebound device activated by vertical or lateral jumping used in a trampoline court. (g) "Trampoliner" means an individual in a trampoline court for the purpose of trampolining. (h) "Trampolining" means tumbling or jumping in a trampoline court.