"Peter Dohm" wrote

Just as one simple example, the shape of the hull and/or floats is
generally asserted to be a major factor in the amount of power needed to
get on the step and airborn, and also in the partially conflicting issues
of the water conditions which might be acceptable...

Peter
(I have a couple of rules of thumb, but no personal experience)

My basic rule of thumb is that I hit it with a hammer at least once a month.
g

I'm not sure what that has to do with anything, but what the heck! ;-)
--
Jim in NC