Futures V2 AM1 Blackstix Al Merrick 3.0 Tri Fin Set The AM1 Blackstix, designed by Al Merrick of Channel Islands Surfboards, is a medium-size Speed Generating fin with a Ride Number of 9.8. The Blackstix construction and V2 foil give this fin a lively feel, making it ideal for creating speed in softer waves. The AM1 template features a smaller center fin for increased maneuverability.