A kit for converting a conventional surfboard into a motorized one, to assist a surfer in paddling away from shore, includes a small motor attachable to the surfboard and a control remote. The electric motor is built directly into a rudder or fin, attachable to the surfboard without any structural modification...http://www.google.fr/patents/US20030167991?utm_source=gb-gplus-shareBrevet US20030167991 - Motorized surfboard and method of assisting surfer in paddling out to waves
Motorized surfboard and method of assisting surfer in paddling out to waves
