Do you bait on your property and stalk in a public jungle nearby? If I had a feeder I'd have a programmable one with a remote switch to accustom them to hearing the feeder release the corn and being fed safely every day at dusk for a few days then sock it to em from my stand one evening. I've seen some hogs come back to feed right after gun shots and other times when hunters go out to collect their dead too but that is more common with bow hunting.