Design Concepts This all started because I had some idea's, some design concepts, that I wanted to try. The learning curve feels vertical at times. It's addictive though. My ramblings about design concepts: FUP – fin options FUP Update Fin Cant – the hidden gem? Evolution of surfboard design A record for a custom surfboard? Fins = confidence to design? Ride Report: float, marbles and fins? Performance vs Wave Quality Maurice Cole The ‘forty one’ – AKU file sent for cutting