I've only had to do it once but it was fucking amazing. I wasn't expecting to need to shit because I never had before, but I got to the trailhead and quite suddenly I had serious fecal urgency. I wasn't going to make it back to a toilet in time even if I'd tried. So I walked a bit down the trail, saw some fallen trees that I could squat against and went off the trail to them. Pissed first, then pulled down my pants, leaned against the tree trunk, and took the fastest, biggest, fattest ogre shit of my life. Whatever people say about squatting being better for shitting than sitting is 1000% true, shit just slid right out of me despite being the size of several hamsters glued together in a hamster centipede. I hadn't been planning on it, so I didn't have anything to dig a hole with and no time to dig it in anyway. I fortunately had a notepad on me so I just wiped up with a page from that (wasn't much to get anyway (squat-shitting is amazing)), threw some dirt over the shit and moved on.
I honestly can't wait for next time.
