Put the deck on, see how high it is and trim to fit.  Had to do the same with my Shearwater Double no big deal.

Ok I will do that, I guess being it is a hybrid, maybe I can use the form that holds the combing ring, thanx for your suggestion....

Hey Ocean...  I added a bulkhead forward of the foot braces on my Wood Duck 12.    To get the proper, and equal contour, take a strip of door skin (About $7.00 at most lumber yards) and cut a 5" wide strip that is about a foot longer than your kayak is wide. Secure one end and then bend it over the aft bulkhead.  With a block plane, shave off JUST A LITTLE and check again.  Do this a few times and you will end up with a perfect fit, ready to be glassed.     ~BRUCE~ 

Thanx a million BRUCE I will try that idea and let you know how it goes...