Doug, thanks for the reply. I did jack up the boat and do that one time. It turned out to be difficult to compute all of the "stations" - we even chalked it on the wall, etc.
Wound up with a semi-usable set of specs to produce a half-hull but not with the accuracy one would want to show in public.

I'll carry that to Jerry and Bob and let you know what comes out.

John in Tucson