slide water toy / parks / trampoline / buoy
slide, parks, trampoline, buoy
If you have Water sledges, then, buying an inflatable Island, you can organize an entertainment complex on the complex. Having sat the vacationers on the sledges, you bring them to the island installed at sea. There the people who wish get out and enjoy themselves, and meantime you go for the next group of thrill-seeking vacationers.