Toe of a shoe works pretty good.Sneaking around in camo waiting for trespassers and poachers would be fun. I imagine having someone wearing a ghillie suit and carrying an AR jump out of nowhere and demand you hit the ground to be searched for weapons and a permission slip...that would probably cure them of trespassing. Then one ghillie guy says to the other "hey...let's don't kill this one just yet...he's got a purty mouth". LOL
Or make some dirt piles around the property that look like graves then add a simple marker like "trespasser #1", "trespasser #2" and so on. Maybe an old pair of jeans peeking a bit from the dirt lol.