I don't know if this has been mentioned before, but these wider boats (10',12', and up) have an important disadvantage. This is the fact that it takes more wind to get them up on one hull. And in most parts of the US/Canada in the summer the wind is quite light. So, a standard width (8.5') boat will walk away on all points of sail, everything else being equal, in light wind, say 12 knots or less.

Bill, can you tell us how much wind was required to get your 20x20' beast flying a hull?