Often, purely asking that question means the answer is ..NO,... but not always. On this occasion I'm not sure. So i'm putting it out there. I have a dilemma. I've been aware of Wharram cats for only a few years, but I heard the philosophy...which made perfect sense, I bought the book..which i loved, I bought the design book.. which inspired me, I bought study plans..which inspired me a bit more. Now I have building plans for a Hitia 17 which seems to be a good boat for my skills/ time/ resources available. My dilemma is that I was given 2 fibreglass Shearwater hulls which I tidied up over the summer (before buying the Hitia plans). I've been thinking that maybe I could modify these hulls to take the crossbeams and rig from the Hitia 17. Possibly even add a stem and stern post so that I can use the Wharram lashed rudder system. The hulls are obviously vastly different from the Wharram design...flat stern, round bottom, designed to use centre boards and kick up rudders. I'm into utilising what's avaiable in order to get on the water as soon as possible and to minimise my expenses and build time. Safety is, of course, a concern and solidly fixing wood to fibreglass is what I'm going to have to do for this to work. Any opinions on this subject would be most welcome.