This clip shows the model proa accelerate in a gust:
http://www.youtube.com/watch?v=9CqK96VfQRk
I was a bit slow on the shunt so beached it.
It needs sheet control to adjust the sail cant to sustain conditions like this to avoid the leeward bow digging in. However it demonstrates the ability to lift the forward sections of the windward hull and begin to fly. On the full size version the weight of the lee hull will be relatively lower so the CoG will be very close to the windward hull giving it the tendency to roll into the wind when the sail is canted correctly.
Rick