I hate ATV guys just as much as the next guy and most of my hunting spots are as far away from people as possible. But i have found that the deer can really careless about the ATV's in "some" areas. I had a big doe and with 2 of her fawns in front of my stand last year while a dirtbike rolled past and not one of the deer moved. Now i don't know if they were just really used to it or what, but it kind of startled me because i was expecting them to go running through the woods like a freight train!

Good luck with your spot and i would probably get your camera out of there before someone else does.