Choose one...spend time (FD) or spend $ on fuel (SD)
Fact is that a SD transom is not nearly as efficient as a FD transom at hull speed, but if you want to go faster, you give up on slow speed efficiency with the SD hull form.
Kevin, you must have excluded me because of my numbers, but I can say for certain that we operate in weather that you do not. I would not trade my FD hull for your SD hull, even though there are times that I would like to have your speed while crossing the Gulf.
One trip in April we had easy 20' rollers with 25-30kts SE. We ended up way off shore for the necessary tack. In all of these trips, I know the boat can take more than the crew.
For the casual boater, weekend warrior, sport fisherman, coastal cruiser, the SD hull can offer something the FD hull cannot...speed. For those needing long range and don't have many time commitments like a Monday am job, FD is hard to beat.
Just for fun, here is a video exiting Bainbridge southbound for the Gulf. The anchor hawse holes are 7.5' from the water. I look out 13-14' above the water from the helm. It never looks as impressive with pictures and video, but it was a fun ride.
Video