Our house is 1100 ft back and barely visible off the main road, down a gravel driveway and over a wood bridge that spans our creek. We've had so many uninvited guests I lost count. A few months ago I was out in the (detached) garage, both bay doors and the workshop door open, stereo going, and I hear the sound of a car pulling up through the gravel. Car stops right in front of the garage, and a middle aged guy gets out and starts looking around while standing by the side of the car. I walked out of the garage, looked at him, he looks at me and smiles and says nothing. After about 3-4 seconds of extremely awkward silence I say "You know you're on private property?" and he says "Yea, I figured, I just wanted to see what it looks like back here, you cant tell from the road". I pointed at his car, then pointed toward the road, and made an exaggerated wave goodbye with my hand. Silently, he got back into his car, and drives out.
I like living on a large parcel of old farmland, not far at all from the suburban neighborhoods right up the road, but far enough that the relative silence and (perceived) privacy is great, but it lends itself too heavily to trespassers, poachers, and people who generally feel like its ok to just wander around other people's property if they get a whim to go exploring.