What a beautiful boat!

Are you describing how the wing on Patient Lady works, or another boat?

If another boat, am I correct in guessing that the wing on "Patient Lady" is controlled with the trailing edge acting like a trim on an aircraft aileron in that it goes one direction to make the aileron go the other? Or is the trailing edge like an aileron?

Do you control it by moving the front or the rear or a combination?

I am a bit surprised that the wing does not have an endplate on the top of mast and the same on the bottom although on the bottom it would likely get in the way.

A wild guess is that an endplate on the top might encourage the boat to heel more as it would tend to produce lift which when combined with a heel would tend to pull the wing sideways.

Also where is the boat in Toronto as I pass through there ocassionally? Etobicoke maybe?