a Gary is someone who has all the sailing gear, does everything by the book, has all the chat, but when it comes done to the sailing ability they are useless
see that guy in he's own BA who's just beached the Areo he's such a Gary
A person in a sport predominantly sailing who has all the gear and no idea, who believes they are good at the sport, but they are terrible and in extreme cases damaging equipment they also love Gary chat with instructors of the sport
The guy who just got off that boat is such a Gary