Unistepping!
What the 
???
Methinks it’s Fred Flintstone, sitting a little crooked.
Wearing shoes.
Lol. Too funny! I wonder who won. Jumping on one leg is already hard as it is! But to race using one? Just wow
Racing would make it interesting. 
In the photo above, it looks like only the center set of prints are unistepping; the other two appear to be normal (or maybe the right side was a practice run). Probably a really good workout, at least as long as you can switch from one foot to the other after a while…
We used to swap shoes, so one person would have two left shoes and the other has two right shoes on, then you can leave confusing tracks like this!
I drink every night, and when I awake, unicycling is still on my mind. Oh, how I wish I could forget about unicycling.