I agree with you, he shouldn't have invaded "your" spot. If he was only hunting a couple of miles away and the buck wondered in front of him I'm guessing you wouldn't have had an issue with him shooting it. It's more about you finding a honey hole, and him hunting it. A few of my buddies and I take our deer hunting quite seriously, for us it's not about shooting a deer. We're looking for specific deer that we have caught on camera, or have seen while scouting. Big mature bucks range a lot, especially during the rut. We as friends get together all the time, and share what we're seing, share pictures, and share the places that we are setting up to hunt, be it blinds, or stands, etc, but we never intrude on each other's space. If you invite a guy to use one of your stands and he shoots a big buck, awesome, a buddy got a great deer, but in my oppinion it's not fair to knowingly sneak into another friend's area that he's set up in. I good friend shot a 168" 5x5 out of one of my stands a few years back. He asked if he could use it, and I said sure. It was a great buck, and I was happy for him. This year 3 of us that are friends and hunt in the same general area shot bucks scoring 160 - 180" typical. They were all shot within 6 miles of each other and the way big mature bucks range in the rut no doubt those big boys crossed paths with each other at some time. We had two of them on camera for a couple of years already, and the other had been seen while scouting. We were very fortunate to tag out with the big guys this year. We each had our spots that we were hunting, and other friends were hunting the area as well, but we never step on each other's toes so to speak. If a buddy is set up, I just can't see myself going to hunt where he hunts. The closest that I can think of ever being set up to friend's spot is at least 3/4 of a mile apart, unless actually hunting with each other. It's nothing for a mature buck to range 4 or 5 miles, so why set up on someone else's lap?