carnuba wax
Last April I decided to experiment with a spray-on carnuba wax. I applied Maguiers to the starboard side, and Turtle to port. Both sides still look great. I realize these waxes won't last as long as others, but they took less than 20% as much time to apply, and only one coat was required. I'm more impressed with Maguiers than Turtle, and plan to use carnuba wax exclusively whenever I have to apply wax while my boat's in the slip. For those who go two or three years between haul-outs, I think that this is an option worth pursuing.