FCS fin placement Biscuit ish board

Please can somebody help. I have shaped what has turned out to be a 5’ 7" 19 1/2 3" biscuit type board
I am going with a thruster setup as i have fcs plugs
Lying about but i have no idea of dimensions for fin placement. Please help

just as rule of thumb-

most shortboards fin set ups as follows:

rear fin 3 1/4" -  31/2"  from tail.

side fins  (trailing edge) +- 11" from  tail  ,  1 1/4" from rail  ( fin trailing edge to rail )  and towed in  somwhere between 3/16" to 3/8".

cant +-5 deg   I like to eyeball the cant.

  wider tails ---> fins go backwards a bit.

you cant really go wrong here!

 

Lee