FCS 2 Flow Performance Glass Longboard Clip in Fin  If you\'re looking for a fin to compliement flowing and laid back surfing, the FCS 2 Flow is a great option. It features a wide base and neutral tip creating a considerable amount of drive and stabililty through turns.  Drive hard off the bottom and perform controlled flowing turns. Neutral fin with elongated base. Provides excess drive and hold for longer turns and trim stability. Suited to a more laid back style of longboarding. Designed to be used as a single fin.