I've hunted over corn for years and have been very sucessfull, with the compound and the recurve. I have also caught a lot of flack for doing it from my friends, and others who say it isn't fair and all that.
I will tell you this though....I have hunted for twenty years, killing a whole lot of deer out of tree stands and on the ground while hunting over a feeder.
In all that time, I have only seen ONE trophy buck while hunting with corn. ONE.
I think big bucks, at least the ones who have been around a while, dont like all the activity and the extra scent you leave behind when tending to the feeders......the does and young bucks dont really care too much...I've actually urinated next to the corn and they paid no attention to it whatsoever.
Since then, I've stopped using it, and stopped worrying about quantity and started thinking about quality. My wife hunts with a compound, it's her job to fill the freezer....it's mine to decorate the wall!!!