Have you ever ridden a unicycle?  It takes great balance to ride it since there is only one wheel that touches the ground.
I have not. I do not have good balance even when walking so I can't imagine trying to ride a unicycle!
Unicycle
A unicycle is a vehicle that touches the ground with only one wheel. The most common variation has a frame with a saddle, and has a pedal-driven direct drive. A two speed hub is commercially available for faster unicycling. Unicycling is practiced professionally in circuses, by street performers, in festivals, and as a hobby. Unicycles have also been used to create new sports such as unicycle hockey. In recent years, unicycles have also been used in mountain unicycling, an activity similar to mountain biking or
I hadn't been the first guy out. They were saving some room, on the chance that there would possibly be a better ride. But when it was over they said they'd have marked me higher if I'd ridden last. Sammy Andrews, who owned Bodacious, said he'd have marked me 98 or 99, and that it was the best ride he'd ever seen". There are those who consider it the greatest ride in history, "a near perfect exhibition of balance and anticipation." The