Originally Posted by waynemarlow

As an experiment try facing your boat directly into wind on the beach without any main sheet on, now tighten the downhaul and see what happens, you maybe surprised. Mine becomes like a cat on a hot roof, bouncing around all over the place.

Any idea why this is the case? Pulling the downhaul should flatten the sail, reducing the camber.

F18: C2 / A-Cat: Minelli