Hunted turkeys in Alabama and Louisiana. I swear stateland birds will not fly down from their roost till noon. I know they can't be that smart but I've seen it alot.
3 miles from the car I do it all the time. Especially if it's close to dark. Shot one in my spot and cut it up in the dark and packed it out. Really makes you think when you have one in front of you. How bad do I really want to do this? Lol
I never set up in a field. Alway set up back off the field to intercept when they are going to field. One night freezing to death in the dark with 20 deer under me taught me that lol