The Butt Buoyâ„¢ is much more that just a funny marker buoy, besides being a unique way to locate your anchor/mooring spot on the water, you can use it to float your swimming pool thermometer, mark your scuba diving spot, design your water-ski slalom course and even use it to mark your lobster and crab traps!! We have also seen it used as a boat and PWC bumper at the marina. So the next time you are looking for that perfect gift for that hard to buy for person, remember the Butt Buoyâ„¢ and its many uses!