My son in law just got his first jeep, and he commented on one of my utube vids where I was backing down a switchback, that it must have taken a lot of clutch action... What clutch? You pick the proper gear, in this case reverse, in low range, and stay off the clutch... Of course there may be some shifting involved as the terrain changes, but to use the clutch as a method to ease over rocks, or down into gullies? If one continues in the method posted by the OP the clutch will be fried in no time. One tried and true method to slow down, if 1st gear low range isn't slow enough, is compression braking. That is, just pretend it's an automatic and use the brakes right down to the stall point, with practice this is the most effective way to control your crawl rate without using/abusing your clutch. There are many pro/con reasons to have an auto or manual trans. I prefer manual, some prefer auto..