Interesting cap. I read about your trials on the ecomod site. I life in Maryland and know a boatbuilder you may be interested in partnering with you. He builds large boats but business sucks because of the economy. He rebuilt my fiberglass pontoon this summer. He is a true craftsman and doesn't cut corners. Plus he is an honest guy who trests people fairly. I can get you in touch with him if you are interested. He could certainly produce caps from your molds if you want some to sell. Check out his website - do a search for Carman Boats.
Jim 2009 scab 8foot bed email@example.com