Put me in the ugly feet club.
I've had a pair of Merrill water shoes for a few years now and LOVE them. They function well on land (or a boat), they're self draining, they lace up nice and tight and they're meant to be IN the water. Perfect for the odd times you have to hop in the water for whatever reason, or for wading up to the beach at Dobbins Island.
They're pretty similar to these, and even with a blue sole on mine they don't leave marks on the boat: