Twin Rudders
All minis are equipped with twin rudders for better control off the wind. With the boat heeling the windward rudder is lifted almost completely out of the water.
I burn the halyard off and grab a corner of the gennaker, and spend 20 minutes fighting this beast. When you look back, see no-one, see nothing but white water, there is a small little thought that passes your mind, not for long, but that this is actually pretty damn dangerous!