Yes. Whether the boat has a motor or not is immaterial to the life jacket law. Wyoming law requires that watercraft, whether motored or not, must carry a U.S. Coast Guard approved wearable personal flotation device (PFD) of a suitable size for each person on board. "Water sport toys" -- float tubes, air mattresses -- are exempt from the PFD requirement in most instances. "Toy" users must wear a PFD if being pulled by a boat or if a motor is attached to the toy, as some anglers are doing by attaching an electric motor to their float tube.