pie pans hanging around. lather the ladder with pepper spray. mount a bucket of pi$$ and rigged to douse him along the climb. However, mount a cheap stealth cam 35 in an ajacent tree, aimed at the seat, that way go got sufficient proof for the prosecutor to approve a trespassing charge. Do u know who he is or where he is parking to get the license tag? Also hang a small sign that he can read once seated "say cheese a$$hole"