A few weeks back, we covered the German study that measured pressure on fins during surfing, recording up to 300 N of force creating lift during turns.
I ride a quad, and after I lost the back two fins, I replaced them with the cheap plastic composite fins. The difference in flex and speed was huge, felt like a completely different board.
I ride a quad, and after I lost the back two fins, I replaced them with the cheap plastic composite fins. The difference in flex and speed was huge, felt like a completely different board.