I also concur on the trail rides in Moab,my instructor from Moab took us on trials that were rated at first easy then we finished the day with 4 trails that were rated moderate.I never look at what area we were on because he knew the park so well.But the climbs were not by no means easy for you really had to have control of the truck while climbing my hill assist was a great asset for if I left the pedal for a moment it would hold the truck in that position until I applied throttle,kinda strange not to hold the brake with my foot,in a way this allowed me to concentrate on using my remote winch control with my right hand while steering with my left.But the truck push up the grade on 2 wheels with no problem,balance of the truck with the tire carrier located in the bed I think help with the center of gravity in a way.The rear axle spring was completely extended on the right rear as well as the right front lower a arm.The moderate climbs were a bit of challenge for you could not see over the hood of the truck any more and had to rely on the headset for communication, with the instructor outside.And at one point I felt maybe the truck would have slided off trail path on it's side,but the trucks two good track points just kept pushing the truck forward until it came down on all fours,but mind you very gently,and in control.I guess after this class I felt that you can climb and off road it is just a matter of patience,and understanding your line of attack up any grade of rock,as a previous Jeep owner I have come to learn this,and being in 4wd Jeep clubs helps a whole lot,for you learn from the master's at Moab,I grew up about 200 miles away from this system of parks,but had never took a truck their.In some ways also a locker well do I need custom axles to enjoy the park,and I a thrill seeker,in no ways no I have seen Jeeps tumble,and trucks as well,even with lockers as well,for if not in control of your locker you can literally drive you truck or jeep right over either on your side or your top.So I guess lockers have their place,but just realize you have power to all 4 wheels while climbing,and even when you drop to 3 or yet 2 wheels slipping the power via the ECM to those remaining wheels while applying throttle,is it a bad thing.But I still had a great time,and it is always fun to go to Moab,I plan to go in the spring or winter when the trail are not so congested,on some trail's we had to wait our turn,adding to the suspense.As far as the Z trail well I just not that bit of a thrill seeker,and also do not what to tear up a good truck for the sake of a You-tube thrill.Just some fun outdoors and enjoy the site's of a beautiful park.