You could do one of two things.
1: Put a stand on your side of the property line, facing his stand. Then sit in it. You two could look at each other, from 10 feet away, all day long.
Eventually, somebody would move
2: Dress a maniken in hunting clothes and put it in his stand. It will be funny as heck watching him yell at the dummy in the pre-dawn darkness.
Video tape it!!!