I actually asked a warden once and he said if you bulldoze a pile of mud up 100yds away from your stand and put the corn behind it you are 100% legal. Pretty funny and I actually thought about doing it once but I figured it was too much work for nothing.
Wrong. You can't just put some object up in front of the feeder and be legal. The entire adjacent area cannot be hunted including deer traveling to and from. Now obviously this is a gray area and each law enforcement officer may view it differently, but you damn sure can't stick the feeder behind a mud pile and call it legal.
And officers in ms are more than willing to write tickets for baiting. I know of several already written this year.
The law is to allow supplemental feeding for game, not to allow you to hunt over it or hunt the animals that are in the immediate area and headed to the feed.