In my mind one of the most likest parts to dent on your Jeep is your gas tank. The tank skid on early Tjs is nothing more than a tin plate to hold the tank in place. (The tank was improved in later years but still isn’t great)
Why do I need a skid my gas tank is plastic? Well you can puncture plastic too and over time all that thumbing and dragging over rocks is going to take its toll. Your fuel pump is inside the tank, you don’t really want to hit that to many times. I know from experience!