I noticed that one of the bow lines was showing signs of chafe so I added a backup line.
I was stepping down onto the cold, damp, wood planked pontoon from just forward of the shrouds in my (non sailing) trainers when my leading foot slipped. I dropped down on to my bottom and my trailing leg landed in the water catching the front of my shin on the edge of the pontoon on the way.
My exploit was minor league in comparison to Silkie's attempt at walking on water, and Aquaplane's pike with double twist but it stung for a while.

Ash