The easiest and cheapest method would be to feed them corn. I have a tripod feeder that holds about 200lbs of corn and it is set to feed twice a day. I only have to refill it every three months and swap out a battery every two. I got the feeder at BassPro for around $80 on sale and i also added a solar panel charger for another $25, it helps the battery last a little longer before i have to swap it out with a fully charged one. The corn that i feed them keeps them around all year but it is not that nutritional. I think most people add minerals and other types of pellet foods to there corn. Good luck!