Sean Mattison

Sean Mattison is an American former professional surfer and current professional surf coach, known mostly for designing The Nubster, a fifth surfboard fin that is added to the usual fin arrangement of a surfboard. Mattison also designs his own alternative high performance surfboards and surfboard fins under the name Von-Sol. In 2009 he worked as assistant coach alongside head coach Ian Cairns to coach the USA Surf Team at the 2009 ISA World Championships. The team scored a gold medal at that event, and before it the United States had not won a gold medal at the championships since 1996, which made the coaching staff's result a notable return to the top of international surfing.