Join Date: Feb 2000
Location: Annapolis, Md
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C Flex was one off boat building system which used a female mold and a product that consisted of fiberglass rods and cloth for the first layup. The female mold was generally more of a series of frames and closely spaced ribands similar to wooden boat construction. The rods in the C Flex allowed a certain amount of bridging of the frames and so was supposed to be to some degree self-fairing. C-Flex boats were generally constucted upside down and from the inside, out toward the exterior skin.
C-Flex produced a fairly heavy but not especially sturdy boat because it took a lot of material to get one faired up. I helped fair one in Savannah and is was enormous work to get fair. We ended up grinding down through quite a few glass layers in places and filling other deep dips in others. It was a real pain to get to look even halfway decent.
C-flex was replaced as a popular amateur one off boat building method by a variety of techniques such as cold-molding and various cored techniques that produced lighter, fairer, and stronger boats, often with a lot less effort.
In any event, I would expect a very heavy, but not especially sturdy or fair hull. Also this was a technique that was NOT very popular with the more reputable high quality designers so I would also be suspect of the design.