Went out for my first gun hunt today to a spot my buddy told me to go. Got out a little later then I wanted: Finally in a tree about 6...wanted at least 5. I noticed a blind behind me while setting up but it was empty. I got up in my tree about 6 or so. At about 630, down the trail I was watching, comes a hunter...I knew where he was headed..I chirped at him but no luck. He set up right behind me (20 feet) and the minute he settle in, he saw me...he quickly apologized and moved out. So...my point is...Is it first come first serve so to speak? You own the ground if you are there first?