Bush--I had the same thing happen to me on 5C last year--I get set up at 2pm and then 30 minutes later two guys walk right through my spot talking loudly and goofing around. I wait till they leave, jump in my truck and relocate. 2 hours later I arrowed a small 6 point after relocating in a hurry. Don't worry about it, these things happen on Quantico. Just always remember this on Quantico. If an area seems too good to be true, and too easy to get to, then it probably is attracting alot of other hunters.

Rule of thumb for me....get at least 1/2 mile from where I believe other people will be, and park out in the open see they see my truck and don't follow me in....have fun!