I have been reading you a lot these last years and you guys helped me a lot ! After shaping few boards, here comes my first topic, so I hope I am in the right spot and that I do it the right way.
I am currently shaping a round pin twin fin, approximately 6’5 x 20’’3/4 x 2’’15/16 and I am struggling with finding the right fins placement.
I know that it can be different for every surfer and its foot placement but most of the information I found are for swallow tail / fish.
So I guess I should place them between 6.5" and 10" from the tail and 1/8" to 3/16" toe-in but that let a lot of possibilities so maybe one of you would have a more precise answer.
Toe in:
I always use a long Masonite strip as a ruler (7’) and measure the offset to the nose.
I don’t remember exactly for this board, but it’s approximately 1.0-1.5" offset from the nose.
Edit:
Took the board out and measured:
It’s 1.1/8-1.1/4" offset from the nosetip. (30mm)
Which measures just a smidge under 1/4" toe in over a 5" base at the fin. (5mm over 125mm base to be exact)
Don’t know for him but rule is mark your fins positions on blank then cut plug cavities to have fins those place. Cuts depend on fin system. It’s come from old time when fins are fixed, at that time we glue fins on botttom lam then lam all around with couple of fiberglass and mesh. It was a good way to learn sanding…
