The problem with these types of threads (you usually get one or more every year) is that "stealth camping" means different things to different people. For example, with some restrictions/rules, you can legally camp on much (if not most) undeveloped (i.e., outside of established campgrounds) U.S.F.S. land. Same with some state forests in some states. Stealth camping to someone else may mean camping or private or public land where camping is not permitted.

I stealth camped/trespassed once. Last year. Private nature center maybe 10 miles from my house. Wanted to get out of the city to try view a meteor shower in the middle of the night. I didn't care for the experience. I didn't like sneaking around and having to rush out early the next day to avoid the possibility of being discovered. The only thing redeeming about it was that shortly after I pitched my tent, a nearby fox started screaming.