Hello Bill,
I simply can't resist comparing your simple statement:
The planing hull bottom that I tried was one design, one effort. I do not think it was optimized.
with that of another famous designer when he justifies the absence of foils in his (excelent) designs with one single bad experience a long time ago. It simply fails to recognize that one try is not enough - especially when you do not have access to the best research available.
In my opinion this says a lot about your own idoniety and credibility (but I don't mean he isn't - just that he adopted a more sales-oriented position in this case)
Today many multihulls are experimenting with flat bottoms, steps, foils, etc. The only place I saw a "V" bottom was in the preliminary drawings of a 60 ft cat for a French skipper (Kersauson?). It looked like the float of a hidroplane, exactly as you say.
I guess by now they should already be testing the concept in smaller scale. We will soon find out if it worked.
Thanks for your time,