I did a lot of fin testing this weekend on my sub vector.
For front fins I tested
Vector II 450
Vector II 460
Vector II 550
For rear fins I tested
The results are:
Vector II 550s created way too much drag. Board was slower and I could feel it dragging.
Vector II 450 and 460 too close to call.
375s in the rear for tiny waves. Makes the board pivot/snap/slide and spin the best, but looses drive.
400s best all around blend of drive and looseness.
437s best for head high high waves and big driving bottom turns.
I'm going to keep 460s in the front and swap between 400 and 437 in the rear depending on wave size and power. It takes some effort to get 437 rears. You have to buy replacement rears from a thruster setup.
If you're wondering about 2+1, forget about it. I tested 2+1 versus quads in identical 9'0 C4 bat tails. 2+1 was too draggy. So much so, you could feel it just paddling. Long live quads! Want more drive, use a larger rear fin and stay quad all the way baby!
Happy SUP Summer
22 hours ago