they need to be round something soft or round and smooth, put them near a sump gaurd and they will shred in seconds.
personally i dont think any plasma stuff is safe for our use, plasma rope is designed to be static, ie the rope doesnt move but the vehicle moves as it winds in to a fixed point, we work the opposite our vehicle is static and the load gets pulled to us. plasma is a great rope just not for our use, we drag ropes through the ground too much i have seen it snap a few times, including one during a rescue training scenario