Whats your
 

Crab claw sail, I have an idea of using alloy tripod with the crab claw sail
swung in the middle fixed between deck and tripod, and sheets to the point.
Big problem with this type of sail in normal use is the tacking and taking
the sail from one side of mast to the other, windward performance of this
type of sail size for size cannot be beaten.
The tripod design would be two uprights forming tripod each side of boat
with a cross bar that the sail is hung from.the middle.
Any views.