Dave, thanks. Sturdy was the name of the game. I have had sawhorses in the past that like to rock and move as one preforms work them.
Steve, thanks. Good to know you have been down that road. I will be using a plan out of "Nick Schade's" book. I will be using an internal frame set up. The next step for me is to build a box beam out of plywood, (at least a cross section). So I can devise a jig for my trim router, to be used to clean up the center of the forms. I have an idea for that, but it needs to be sized correctly, no play but able to slide along the strongback.