I split my marshmellows and put an envelope of cherry kool aid(dry) in the bag to coat. I put 1 under the trigger before I set the trap and then add some fish flavored cat food. I put the trap dead center of the trail. Make them run their nose right into the smell and makes an easy snack. I wouldn't compete with the food source they are heading to like a cornfield or the feeder you describe. "Iowatrapper" on youtube has a nice series on raccoon trapping. He catches around 1000 ringtails every year.
Coyote/cat trapping rule 1 for me- Location and set trap on sign. Sign = Tracks or scat. It's hard to catch what isn't there. Rule 2: learn to bed a trap. If the trap isn't bedded solid(moves/rocks under foot), you just as well not leave it there. Bait/lure and flat, dirthole, etc set construction are all down the list from 1 & 2.