Trespassing and a cell camera isn't worth burning someone's home down. This is also coming from someone that has had at least 10 trespassers on their properties this year alone. It makes my blood boil and I end up spending way too much time thinking about it.
You're doing the right thing by pressing charges. Do it every time you can. Even if they aren't of the mental capacity to understand property lines or fines, they might have family or friends that will learn not to go on your property. Word gets around one way or another.