FCS II DHD Performance Core Thruster FinsDarren Handley Design 'DHD' shaper fin. A versatile fin ideal for controlled power turns in critical sections. Overview Featuring a new sleek graphic and a modified smaller centre fin, the new DHD template is built for increased speed and fast tail release. Designed with a subtle texture on the top half of the fin to reduce friction, the innovation behind this fin is unmatched. By reducing the size of the centre fin, we have minimised drag and