Fish fins placement ....

Dear all ,

Need to know wat’s e fin placement for a size 6" tall x 9" base fins ? My board size 5’4" x 20" x 2.6/8" , tail tip to tip 12" .

How far away from the fish tail tip , how far apart from the stringer …

Regards , A .

Hi, I have a Lis fish that I’ve been using for reference for shaping my fishes and the fins which are 5"x7 1/2", are set 5 1/4" from the tail and are set 1 1/4" from the rail. They do have a slight toe in and slight cant also. I set the fins on a fish I shaped like this and it works just fine.

Dear foamdust ,

Thanks for the reply , so it doesn’t matter how far apart between fin to fin ? Read some dicussion on swaylock most of em prefer 12" apart . How far apart is urs ?

With respect , A .

gday andi. i did a lot of research on sways & came up with these numbers for my twin keel fish. i hope it helps.

for reference, here’s the board dims:

length: 5’7"

wide point: 20 & 1/2"

nose: 17"

tail: 18 & 1/2"

thickness: 2 & 3/4"

swallow tip to tip: 11 & 1/2"

buttcrack depth: 5 & 1/2"

& the fin numbers:

keel: 9 & 3/4" base, 5" deep

leading edge of keel: 5 & 3/4" from centre

trailing edge of keel: 6" from centre & 6 & 1/2" from tail

toe: 1/4"

cant: 3 degrees

this setup works well for me. i really love riding this surfboard.

I think I used Foamdust’s numbers three years ago for my first fish. I usually line them with the end of the butt crack. Sometimes a little further forward. 1 1/4 off the rail. Cool T shirt, Oldy. Mike