If you go to feed store there is a type of hog feed called "chops" It's the leftovers from making flour and other wheat waste. You soak it in water before feeding a domesticated hog. 100 LB is very cheap compared to corn. It can be carried into the woods dry. Set your bait near a water source. Half a bucket will swell up enough to fill the bucket. It sours quickly in warm weather once it is wet. Another source of good bait is a bread plant. You can usually get a 55 gallon drum of stale bread products for less than $35. Stale bread is light. You can easily carry a large trash bag full of stale bread products for a long distance.
After the hogs suffer a few casualties they will go nocturnal. Here in NC feral hogs are not considered game animals. You can hunt them at night by any method that isn't considered reckless. I was talking to a game warden about our feral hog population. He joked that feral hogs are a sporting use for tactical nukes. If you don't have a great place to hunt hogs. A chat with a game warden could hook you up with land owners that want hogs killed on their property.