: It might be difficult bending frames around some of the sharp turns at the
: bilge. Keep in mind that if you bend frames around the existing forms and
: then add longitudinal stringers to the outside of the frames you will wind
: up with a somewhat larger hull.

3/8" fir ribs would be too thick in my experience , better results would be had if you use a two part rib of 1/8"lams, no need to glue them together as when you lash the chines on it will keep them together fine.