Well, abandon this site if you must. But before you do, try to determine the direction of the prevailing wind then discretely plant the scent of man and maybe dog downwind of his stand. Maybe a camo patterned bandana that you've sweated on all day or anything likely to retain the scent of a human for a long time. If you're feeling especially vindictive, plant a note on the tree telling him what you've done and invite him to find your "manscrapes".