If stealth camping is what you seek, we usually look for the red flashing lights on top of the radio towers as they have usually remote locations away from people and also have a good flat parking lot for the work vehicles for you to drop a tent onto. Some even have port a toilets for their workers too.
As said before, when stealth camping, if anywhere near people, don't use a fire. Leave the area as you found it so as not to get it closed down for others.....common sense stuff really. Plus if you are found 99% of the time you won't get evicted.