I also have the sticky tape like they use on the houseboats here to keep people from slipping when it is wet. When I went to the bid April car show here they were trying to put a Super Bee on one for people to see and it kept slipping as the grass was damp. I told the woman what I had did and they went down to the hardware store and got some and the problem was solved. Then I looked at their book and there was my Cobra on mine. Mine are now 20 different colors as I use them to paint stuff on when the car is off. I also back my car onto the ramps and I got some silver tape and ran a strip down the ramp so when I keep the rear tire just along that strip I am on them perfectly. Then I put a cross strip at the top where I wanted to stop.
As you can see mine have b een used a lot and aren't nice and clean any more.
The air bag idea is something that I hadn't thought of.
Ron