I find this pretty interesting and handy. I got to try it first hand when my bud Andy broke his shee at Glamis.
Some guy in a sandrail toss us this strap, you weave it & the harder you pull the tighter the grab.
The one we tried was the 1" strap.. I asked the owner what he towed with such a small strap.
He said he pulls other rails or even pulled him out the dunes with it:
1" X 25' SUPER STRAP 34125 by SuperStrap
Oh... and I pulled him out of Olds Hill back out to Sand Hwy withe my Banshee so I'm sure hey ate alot of sand lo.... Sorry Andeee!