If you've always wanted to surf but are too lazy to paddle yourself out to the waves, you will probably be a terrible surfer. But if you think otherwise, maybe you'd be interested in the Wavejet.
The Wavejet is a Personal Water Propulsion (PWP) engine. You can stick it to the bottom of surfboards, boogie boards, kayaks, and small watercraft to give it an extra boost. It's got rechargeable batteries on board for 30 minutes of propulsion, and it can get you going at speeds up to three times faster than paddling. Just don't expect much respect from the surfers out there.