check out this for a cool looking fin , looks like it would go pretty good too in a 2 plus 1 setup
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7" CW

New School progressive Longboard Shapers Steve Del Rosso has designed the 7 ”CW with an upright template and less rake in the tip. This allows for quick and pivotal surfing with minimal drag. Combined with a flexi tip that springs out of turns with drive and speed.The 7”CW delivers a new school performance of longboard surfing with the hold and stabaility to noseride.

Resin Tints: Blue

The Performance Fibreglass Series has a natural flex pattern (stiffer base and a flexi tip), this flex pattern is matching to traditional fiberglass fins. The Performance Fibreglass Series uses RTM (Resin Transfer Molding) to result the weight associated with traditional solid fiberglass fin. The PF Series uses a unique blend and layup of Fibreglass to emulate the feel, Flex and drive of a glass on fin.