Troy Elmore takes a minute to talk through his keel fin template, generally designed for a traditional Lis-style fish. Troy revels in the speed of a fish, but the main challenge is "controlling" the board. Can you master control with so much speed? Fish designs are usually fast and skatey, so when designing this fin, Troy tried to morph the traditional double-foil, straight-back Gephart keels with a more modern profile to balance the variables. Based on his surfing, it seems like things worked out.