Hi Tin,
Not jumped on me at all, and if you did you would only bounce off with the size of me, I'm like the marshmallow man in Ghostbusters, but twice as thick skinned.
I didn't say these were the original designers, but the producers who SUPPLY Bay Com.
I had seen these in use many years ago in the UK but couldn't find a supplier here when I wanted to try one out. An Aussie put me onto these people when I put the word about on the web that I was looking for one.
It is like the old circular disc threading tool, great idea but can't find a supplier.
Bouncy John