Have you tried it? Curiosity makes me think you had some trial and error in doing this.
It's not for real depth, so it reads. It looks rather easy.
I'd still like to try it and I bet others would too. I don't think dietary reasons are necessarily part of this. Odd you mention things like this
It confuses the person asking or those wanting to give it a try should Protech offer to the tourists.
Not everyone is slight built like anorexic appearing people