having just fallen off one right before my second bounce... I can say this sounds more dangerous than I would have first thought. I landed on my tailbone - head helmets don't seem nearly useful enough. I'm grateful nothing was broken but 2 weeks later I still have occasional stabs of pain from that.
I tried one once years ago. I admittedly don't have the world's best balance but it was much harder than I would have expected. I'm sure there are some people for whom it's relatively effortless with a bit of practice but they wouldn't seem to be the target market for rentals.
Hard to believe this isn't at least somewhat tongue in cheek/PR.
