All these things are true. They come in many forms. Two of the guys have been doing composites. You can buy one from Marty <[email protected]>. I have my own design done the old fashioned way, built up balsa covered in film. Another composite is Jon's, I don't know if he's interested in selling but he can be reached at <[email protected]> also the CUPRA web site has been developed and maintained by him.