David, you are really far too kind. All I can say is that without epoxy I couldn't build anything that would float. It turns a bodger into a builder.
I truly hope that I haven't shot you down in flames before and if I have, I can only apologise. I have actually thought about putting camber on the upper part of the lute - it seemed to make sense. But while traditional junks have very curved sterns, those with a 'lute' seem to have a flat top (not, I suppose that this is really relevant) and when I tried adding camber to the model , I was rather surprised to see that - at least at that scale - it really didn't seem to work.
I'm planning to add a lot of decoration to the lute, so hope it will end up in keeping. These little aesthetic details have nothing to do with the boat's efficiency, but are ludicrously important to the besotted builder!
I hope you get up to Whangarei so that I can show you what I'm doing.
As to building a boat for yourself: all I can say is that it will be wonderful to be back afloat, but that I suspect in retrospect, this will be one of the happiest and most fulfilling times of my life!