First, I hunt in WV mountains and have heard ALMOST EVERYONE who hunts there complain about how few deer they were seeing this year, probably due to last year's bad winter. I have also heard many similar reports from Pennsylvania. Also, my area has had ZERO acorns for two years in a row now (gypsy moths a few years ago, drought last year, late frost, etc. etc.). It is therefore likely that trespassing poachers aren't solely responsible for the reduction in your deer herd.

Having said that, yes, post it. There is nothing worse than having someone in your permanent stand on your own land when you go to hunt there, or having someone walk right by you to hunt during prime time on your own land, or even put pressure on your deer herd and make it harder hunting for you than it should be.

There is a sign company in NY (the company name is Voss) that sells aluminum signs for just over $1 apiece if you buy over 100. They'll last 20 years, unlike paper or plastic ones. I would post it every 30 yards or so, about head height. Use aluminum nails, and leave about 1/2" sticking out to allow the tree to grow without buckling the sign off it. There are other sign companies too, but that was the cheapest I found and everyone I've had check into it goes with them. If you can't find it by searching, let me know and I'll give you contact information...