That is what I was thinking. Are you also strapped down for the toilet? It's going to be messy when it flips while you're evacuating your bowels.

And, overall, it seems incredibly pointless! If you have a survival ball like this, why not just let it float? Why put it on a dangerously unstable surface?

> Why put it on a dangerously unstable surface?

I think that's the whole point? No "normal" person would think doing this is a good idea -- he wants the thrill of the ride with a minimum of recklessness.

You couldn't pay me enough to do this.