Fortunately I haven't had too many problems with kids lately, other than an occassional one that walked through our site. We had all kinds of issues back when we used to have a PU. It might just be that we noticed the issue more back then because the PU was so much more open and you could hear and see everything. I could write a book of horror stories of kids invading our space back when we had the PU. Once we had a group of kids running around our PU to play hide and seek, even hiding under the bunks. I stopped that in a hurry, imagining one of them getting hurt and then their parents suing me. But it just blew my mind that these kids had no clue or manners, and their parent's could probably care less.
Perhaps it is better now because we learned our lesson and stopped going to the CGs where we had issues. I know some people that put up string line to prevent kids from cutting through their site. That's a bit radical, and the potential for injury is pretty high, especially at night.
