I have all the data for my own design for an A-Class hull. Hopefully the attached image files work. I used a spreadsheet attempting to minimize wetted surface (elliptical-circular-ellptical sections), maintain a target prismatic coefficient, while minimizing the rate of change of displacement/frontal area from fron to back. It ened up with a little bit of rocker, which I thought was nice, but can't explain why. There are much more sophisticated ways of doing this, such as using Taylor Series expansions to minimize/maximize certain variables, but I don't have time yet for this. Anyway, E-mail me and I'll send you my spreadsheets...
