Originally Posted by Mr.Boat
... I know it sounds ambitious bit it's something I really want to do.
Are there others who have built their own boat? ..
I was about to do it for my last boat but time was against me. I still wish I had been able to go ahead with it so I understand your enthusiasm.
If you are sure you only will make one then the plug>mould>build process will be unnecessary because you could make a hull in about the same time as it would take you to make a plug.
My method was going to be formers covered in strips of spruce of a reasonable thickness to allow carving for the formation of compound curves. Overlaid with fibreglass laminate and also laminated inside to form a sandwich construction. The longitudinal stiffening was to be two longitudinals from transom to bow and 50mm thick, either Mahogany or Douglas Fir. Some parts of the spruce would be removed to ensure the longitudinals were attached to the outer of the hull. 25mm marine ply deck bonded and screwed to the longitudinals and laminated to the hull sides and over onto the tube flanges.
You can have that for free.
Edit: Your post arrived while I was typing this one so here's a further comment. If you use stitched ply you limit yourself to a hull which can only be formed from development of flat panels. Personally, I feel there are worthwhile hull characteristics which can only be produced using compound curves.