The most effective way of removing feral hogs is by trapping since you can catch multiple animals at a time. Shoot one and the others scatter.
Feral hog meat, unlike typical pork, is a deep red and can have a wild-game taste. It makes for great sausage and barbecuing but you wouldn't necessarily want a ham sandwich everyday in your lunch.
Many outfitters charge both the hunter for the opportunity to hunt and the farmer for the removal service.