You help run a resort that in the winter offers snow-tubing. Patrons pay to slide down a snow hill on an inflated tube. Because they can fall off or run into each other and get hurt, you have them sign a liability release that says they will not sue the resort if they get hurt while snow-tubing. Is such a release sufficient? What if they claim the injury was due to the negligence of the resort? Will the liability release protect your company against litigation that could bankrupt the resort? Consider Michigan law.