Thom Stewart wrote:

Loco, I think it's time for you to examine all the fact once again. I
do believe you're missing something

I have done some reading on wing keels over the years. I
particularly remember Paul Yates writings on this type of foil. Paul
Yates was the designer of the Merit line of sailboats and the only 3
time winner of the MORC International Championships. He designed a
wing keel for the Merit 23. This was a full race version of the 22
(actually the same hull) He stated a number of facts with 2 that stick
out in my mind. One, the winged keels that have appeared on every
production boat have NOTHING to do design wise or performance wise with
the winged keels that were used on the 12 meter AC boats. Two, any
wing keel must not contribute any force in any direction since that
force would only slow the boat down. This fact kinda shoots a hole in
any theory that would suggest that a wing keel could help lift a 15,000
35' bus up onto plane. If this were possible I think we would have
lightweight sport boats with winged keels being sold on every street
corner. As it stands at the present I don't know of one planing
sportboat that uses a winged keel.
The wing on production boats is only a way to get additional
weight down low without going deeper. These days bulbs have become
more fashionable.