The Orbit Water Trampolines ($2,128 and up) will bring as much fun on the water as you can possibly imagine. Perfect for the ocean, a pool or a lake, these water floating trampolines are built to endure heavy usage and hold up to over 1,000 lb. They come in three sizes, 15, 20 or 25 feet. Don’t pretend you are only getting in for the kids, you know you’ll have as much fun as they will. Available at Amazon.