First, it is public property. Second, you have a right to hunt there. Third, I like the trail cam Idea and you are willing to make a respecful effort more than others would. If you don't hear from the guy, come hunting season, you put your time in too, I am there to hunt. I would hunt 30 to 40 yards around his area. The reason is, one he has a drip. two, don't know when he is hunting. three, any deer that are educated about his hunting presance, will skirt around him and if you are 30-40 down wind will have a shot at them. make the effort, but by all means you have just as much right as he does to hunt the area. I had a simular problem years ago, and made the effort to get ahold of the guy. Then one day he walked in and hunted, once he seen me after we came out and blew his top. I tried reasoning with him and told him I tried to contact him, hell I even left a note with my home and cell phone on his stand. He proceeded to say it is his area and drove off mad. Well, I felt pretty upset and said okay, I drank two bottles of water, walked back in and relieved myself 20 yards in several direction around "his" area. Did this for couple days. Needless to say he didn't shoot a deer and one night was talking (normally to me) about it. I said, well perhaps they are use to you and you need to change it up. he did and others got to hunt in the spot. Bad, I know, but felt he brought it on himself.