I don't have much to add other than I had a blast leading Porcupine rim in 2010. It was a little drizzly in the morning so I guessed some of the rock steps on the trail would be slippery. Having the strap and a few shackles handy made quick work of a few open differentials that were spinning on the rocks.
'03 KTM 450EXC
"If you know what you're doing, then you aren't learning anything." - A. Lincoln