I was in the 82 Airborne in the mid 80's, Yes I would and have jump from many perfectly safe airplane, and from one that was not so safe. (That one was an unscheduled jump) but I would never consider strapping my ass to a cord used for tying down cargo in my truck, no matter how thick it is, and jumping. Why you may ask? Well simple. In parachuting, you have a reserve chute that you can pull in case the crap hits the fan with the first one. I don't see people being attached to a reserve BUNGEE........