fin size / shape for bonzer

I'm bulding a 7'6" hybrid bonzer (hws) with a rounded pintail.  I want to make my own fins.  I have found the fin placement guide here on swaylock's, but need the fin sizes / shapes.  I'm thinking a 5" base on the center fin, 8" deep.  4 1/2" x 2 1/4" and 5 1/4" x 2 3/4" base on the sidebites.  This would correlate with Malcolm's statement The Bonzer side fins have a base totaling 9-3/4” on each side, and a maximum depth of only 2-3/4”.

Welcome any imput / suggestions - thanks!

 

 

This is the model I'm loosely basing it on - a 7'8" from the surfysurfy blog.

 

Huck try a 7.5  and a 7 true ames bonzer fin as a template. Then make them in bamboo. The ones I just finished ride so much better with the bamboo.