Motoring around in the water is one of the most quintessential Florida beach activities. Right inside the Sebastian beach entry you can rent a jet ski or a banana boat, which is a long, inflatable raft that seats multiple people and is towed behind a jet ski. The banana boat is $25 a person, and can fit six adults or eight kids. Jet skis run $85 an hour. The best part of a banana boat ride is falling off. Your inner child will thank you.