Back when, I participated in a barefooting duration contest, held on the Connecticut River in Massachusetts. I was a good solid footer. So, not far into my run, I encountered a small log. Which was slimy, and I slid over it. Later on, another log. Went into paranoid state, trying to straighten up and look ahead. Led to me falling, after maybe 2-3 minutes. So, on the way back, we started picking up debris and putting it in the boat. Was lots of stuff, and it took us a while. We all got back, and they figured that I had a hugely long run. Nope. I forget who was the eventual winner, but I did the river clearing for them.