I live at the edge of a big development with open fields and small wooded areas behind my house. I have a mineral block out for the local deer population, and would like to add a feeder to hold shelled corn or pellets for the four to six white-tails which visit on an irregular basis. This is not for shooting purposes, we just enjoy observing these local deer. I used nearly 400 lbs. of shelled corn last year filling a plastic bird bath placed on the ground; however, a rainy day filled the feeder spoiling the corn. Any suggestions for a functional homemade feeder?