We have substantial steel gates these days which have kept the pesky critters out for the past 8 years, but others are not so lucky. Heard of yet another flying site which has been overrun today. Every vote counts!
Done it Bob, we tried making a permanent caravan park for this bunch In our town, it was steel fenced off, steel gated, succesive groups trashed the place, eventually, all the steel was cut down, cut up, and they weighed it in, so stuff them,
The council in one of the Nottm boroughs built a purpose made park with toilets, showers etc. The first week they ripped out all the pipeworks and weighed them in. As they left, they dumped tons of cut down trees, building rubble, and dirty nappies, every kind of excrement.
