Keep that feeder going all year long. Be sparce in the way you dispense the corn. Your are shaping the deer's behavior to equate the sound of the feeder with a quick meal. I like them to go off at consistent times. One hour after daylight, two hours before sunset. Adjust for Daylight savings if that applies to you. Don't know how this would work for you guys west of the Mississippi, but I've seen it work here.
Hope you are pleasantly surprised!