Futures Rasta Reverse 3/2 Twin+1 Fiber Glass Surfboard Fins - SmokeAs Dave Rastovich showed us on his recent Electric Acid Surfboard Test, the Rasta Reverse 3 2 Twin + 1 is designed to surf your favorite twin board at full throttle. The "Reverse 3 2" refers to the twist in the foil, through the top third of the fin, that adds an additional 3 degrees of cant and 2 degrees less toe. The Reverse aspect is that the toe angle straightens only in the tip. This creates two separate foil surfaces, one at the base of the fin