For all back shed tinkerers i've found a great page with heaps of info on making fins and the science behind them.http://www.geocities.com/reystos/fin_making/
my dad made a speed fin and has done 40-41's speeds on it till it split open going 39 knots and caned himself,now he uses a ka fin![]()
Finns are all made by nationalising foreigners. Because of the drinking problem they are all start and no finnish. boom boom