What would you do???

Saturday Hard_hitter and I get out and in our stands a hour and a half before shooting just to lock in our positions on public land. 12 minutes before shoot time along comes another hunter,which started out nice by asking me where other hunters were? I replied there are two of us across this stretch in our party and a third from another party about 200 yards across from us. Told him we were focused on the ground 25 yards to our left and straight out in front of us. Just letting him know where we expected to be doing our shooting.He says thanks and starts his journey straight out in front of us and he stops 75 yards out and sits in a spruce tree. An hour of sitting there I see a nice BUCK I range him at 125 yards, BUT knuckle head is sitting in between me and the buck he has no clue the buck is coming I know I can reach him with a shot but would never take the chance of shooting over the guys head to do so. BUCK either seen him or smelt him and ran for the woods to live another day. I was furious I told the guy where we were focused and he went str8 our there and sat. I spent a hundred dollars in rounds at the range sighting my gun at a hundred yards and going 1 inche above dead center for I was shooting the new Hornady sabot for shotguns that reach out 200 yards with a 6 inch drop. I was furious, but I know public land is for us all to use. But please remember be considerate to your fellow sportsman. There is alot of land in this area for our use and another 50 yards he could have broke over the hill and been in a total area of his own which was still very promising in which he could have had the next shot at the Buck if I would have missed him or not caught him in my eye. Plus he would have been safe from our rounds ever of reaching him.
Totally made me lose my spirit for the opener weekend…