Here is a little video hitting all three "Hot Tubs" on Hells Revenge Trial in Moab. The S makes it look easy but you can tell by the rubber on the walls these are not easy. Lots of Jeeps land on their tops in these tubs.
A Teryx didn't make it in #2 just before I tried.
YouTube - XXXOffroad's Channel
Nov 16 08
http://www.youtube.com/watch?v=OAXZs5QOHHw