Lost the mast one day and the wind blew us onto rocks, the rocks were all really sharp, covered with barnacles. Add a nice stiff breeze, some wave action. Working to get the whole mess sorted out and not break too much stuff and drag the boat, sails and rigging to a sandy beach, I cut my feet up so bad I could bearly walk for a week. Nice deep cuts on the fleshy instep part of my feet, plus lots of little cuts all over the bottoms of both feet, plus some nice gashes on the ankles.
My wife told me I had "sissy feet"
Now I wear footwear whenever I go sailing.