I recently saw one which had foot-long stakes driven at an angle. I wonder if that would be secure enough. I didn’t consider wind as a major threat at the time.
It also had a big pocket on the front that said in big letters that it just always contain the manual — empty, obviously.
They often have mesh (not bouncy) sides, and even landing from 20’ on your neck on the inflated surface seems like it could be deadly. How awful.