I'm not the foremost authority or the leading expert on whitetail deer, but, it sounds to me like you may have found either a "honey hole" or a "death trap" depending on how you approach it. This is probably a mid-day bedding area that has to be tread on lightly! Once a bedding area is abused, and the deer know you have intruded, it's pretty much over right then and there most of the time! Now, that doesn't mean that it cannot be hunted any more, either! My suggetion would be to ALWAYS PAY ATTENTION TO THE WIND, so you do not tip the deer off. Enter downwind or dont go! Save it for that "perfect" day when you can! Then I would get in there EARLY! I mean a whole hour and a half early if need be, and stay there ALL DAY. Big bucks will move off to this place as late as mid day. Take a sandwich or something quiet to unwrap and eat, a small bottle of water, and I have a large juice bottle that I have cammoed up with tape to "go to the boys room" if need be. This has worked for me in the past, even though it sounds pretty extreme. Big bucks are big because they are FULL-TIME survivors, while we are just PART-TIME predators no matter how much we hunt! I hope this has helped you, I would like to know how you do! GOOD LUCK!

P.S.-- a climbing tree stand up as high as possible (20 feet minimum) will help you defeat the wind once you are there