In order to surf those massive walls of salt water known as big waves, brave surfers usually need to get towed in by a personal watercraft (PWC). This presents some logistical problems (i.e. having to bring a buddy along to tow you around all day). The WaveJet gives you the power you need without requiring a large tow-in vehicle or separate person.
Read the full article: WaveJet - a motorized surfboard for big waves