I should have linked to your thread. It was very helpful. We used your design to get a rough idea of how to make a similar one with about the same dimensions. If anyone comes via Google, kenn's very helpful thread is here:
Well, after much fiberglass work, a fair bit of fabricating and machining assorted metals and a whole lot of sweat, we were finally able to take Stitch, our CL16 hull #223 (circa 1969 or 1970 I believe) out for a shakedown cruise last Friday.