> I have decided to build a box beam type stronge back for my
> Guillemot.Three things I would like to know are: 1 how long should the
> beam be.2 how do I attach the end forms to a box beam.3 is there any
> reason why Icould'nt fill the gap inthe center of the beam with plywood to
> make it solid all the way through.

> THANK YOU IN ADVANCE AND HAPPY NEW TO ALL J.D. Nicks plans call for a 14'11" beam.I made mine from1/2 ply,and staggered the joints by at least 2 feet on the same dimension,ie, on the sides or the top and bottom,glued and screwed the joints,and left it hollow with fillin pieces about 18 inches apart,each 3 or so inches long to stiffen it.Worked fine,I'm on my second Guillemot.The ends just fit in the hollow core,and were glued in place.