I have the same situation. My wife's family has a farm that is about 1200 acres. It has been in there family for generations. The problem is that it is to big to patrol. We never refuse any hunter permision, IF they ask to hunt and let us know were they are going to be. In the past few years it has gotten out of control. People drive there trucks straight through hay, wheat, and even corn fields at night spotting deer. They actually have roads worn into the fields. I keep 100 acres to myself, which is thoroughly marked with posted signs. Still I have had tree stands stolen, I have had people try to kick me off, telling me that it is someone elses property. And telling me that I am selfish posting off 1/12 of a farm to hunt on. I am the one that feeds these deer all year long. I am the one that pays out the nose every year in lost produce, yet I am the selfish one? By the way, none of these local hunters have ever offered to help with anything around the farm.