Futures Rasta Keel Fins The Rasta Keel was designed by Australian free-surfing icon Dave Rastovich, as he developed his own refinements to the classic keel design. Rasta is known for riding alternative boards and this is his go-to fin for down the line speed in any twin fin that suits a keel fin. Template Category | Keel (speed control, drive, trim) Construction | Honeycomb Specifications Side Fins Area 24.59 Height 4.77 Base 6.87 Angle 4.0 Foil V2