"DSK" wrote
AAAARRRRGH no! Now you've summoned the dreaded Navspritigator, who will
soundly denounce anyone who dares utter the dread incantation "free body
diagram"...

I caught that but was pretending it didn't happen.


It's also important to keep in mind the circumstances under which the
underwater foils generate this leeway-countering force. The boat must
have some forward speed. It is quite possible for the boat to move
sideways.

I didn't realize that the forward speed increased lateral resistance.
Er..wait a sec, could this also be called "lift"?

Scout