Hi Dan,
Actually very similar to yourself, but carvel hulls, not clinker. (Although I have a clinker on my to do list).
I use 'Freeship' and generate the hull, then I've been trying to export this into a 3D program, (still trying to find one I can afford, and use simply.
Unfortunately have been using 2D autocad, (since v2.8, and just don't want to go 3D with it), and learning a different Package with different methodology, has proven difficult, on an intermittent part time basis.
I have a friend with CNC machinery, and will be getting him to cut the plugs from which moulds will be taken for some.
For the older historic wooden boats, I am trying to develop the planks, laser cutting same and plank on frame construction, to duplicate original construction.
Sketchup, not quite there for this, Autocad in 3D, have always found horrendous to use (Autocad was written & developed by programmers, and they think different to Engineering blokes). Before Autocad I used a professional cad system developed by engineers and draughtsmen, which was very intuitive to use, but is no longer available, as wasn't written to be run on PC's. Was just starting to use 123D, when my computer died, and Turbocad wasn't up to it. ProE and Solidworks, way beyond my financial resources.
So will watch your efforts and maybe learn where I'm going wrong.
cheers
vnkiwi