I also use U-Haul each spring and fall to tow my boats. Yes, $19.95/day, but its plus mileage. I still figure its less than one months payment on a truck.
And I bet you get screaming, bikini-clad babes hovering around your beast as you float that yacht right W25? Yeah man!
See David? It's a time-honored rite-of-passage. U-Haul+Yacht=Groupies. Every time.