Here’s are the fins that work the new board the best so far. They are rigid. The rails are 21 layers of 6oz warp glass with a layer of 5.7 oz Carbon fiber 3 layers under the high pressure side. They are layed up on an arced surface and the leading and trailing edges are double foiled. The rest of the high pressure side of the fin is a smooth symmetrical concave that twists the tip of the fin in the direction of laminar flow. The center fin is 27 layers and all fins are foile with the vertical cord approximately 25% off the leading edge of the fin, which is softened to make transition from side to side smoother.
Seaya later, Rich