I think youd be a lot better off using a timed feeder so you can control the feed amounts and when the hogs come to feed. The sunslinger feeder I use is battery/solar powered, was around $75. The plastic 55 gal drum was free, the funnel in the drum was $15 or so and I made the tripod legs, all together I spent no more than $150 and it will hold 300 lbs of corn, feeding for 8 seconds twice a day I should not have to fill it up more than once a month AFTER I solve my coon problem.
I also can reccomend the salt mineral licks (brown ones) from Tractor Supply, they are only around $8 a piece, the hogs have been moving it around but havent been able to destroy it yet and it will also bring in the deer.