In my opinion it will allow you to see more deer in greenfield if you don't shoot does in them it is just one way to lesson the amount of pressure on them, also I think you should stay out of the fields no walking around in them looking for tracks and scrapes and no cameras in the fields. Put your houses as far away as possible from the field. If you have deer in the field when you are hunting you should wait till it is dark and try to slip out without spooking them. Anything you do to lesson the amount of disturbance of the deer in and around the fields will help you kill mature bucks on them during the rut. I also think a lot of people overestimate the amount of does they see therefore thinking there buck/doe ratio is worse than it actually is because they put every deer they see without horns in the doe category when actually probably somewhere between 25-50 percent of them are fawns.