RE: Throwing Corn all over?
We have a few feeders like JoeJoe described and all it is is plastic sewer pipe,you can get a plastic lid that is made for it and it keeps the weather out of the feeder.We painted ours with camo paint and you can hardly see it if you don't know where it is set up at.Another trick is when you cap off the bottom of the feeder drill a few small holes in it so if it does get any rain in it will drain out.You simply take the lid off,fill it with any type of grain or feed and put the cap back on.As it emptiesthe gravity of the corn or feed will just keep dropping down and lowering as it empties...we used those cheap metal strips to fasten it to the pipe and drywall screw it to a tree.You can make the feeder as long or as short as the length of pipe you use.
Go to any local Hardware Store and see what they have in stock for you to use and like JoeJoe stated if someone steals the feeder your only out a few dollars and personal labor.