I chartered a Hunter 38.5 - it may not be your design - but was very puzzled by its design. It had a wing keel drawing 3.5 ft and a rudder that needed 4 ft. This boat did not perform well upwind in a blow - no surprise. It seems to me, that if the boat needs 4 ft of water for the rudder, what is the point of not extending the keel to at least 4 ft?