We have a long driveway at my parents' house in the woods... a few people pull up trying to find someone else's home from time to time, then just turn around and go about their way.

It happens in the middle of the night, occasionally... but we don't have a gate so that's expected.

We are at the end of a 1/2 mile lane, the last house, so this happens from time to time.

That said, I have more firepower than most up there, but never thought once of using it unless I was literally threatened.

The Amish and the Menonites go for their after-church walks and cut through our land sometimes too...

At least around here, it wouldn't be a good idea to shoot people on your property by default... it would never fly in court of law.

I say that as someone that's lived in urban, suburban, and rural settings and has seen the way it typically plays out, legally.