I think you need to forget about fields, he's probably nocturnal concerning them and focus on thick bedding areas or a deer drive.

Patterning a deer now, as opposed to prior to rifle season, or the rut, two totally different beasts. Late season to me always means I am going deep. If your area is still rutting good, then one may venture into a field, but I would focus on areas you think are bedding spots in brush.