There will have to be legal changes to control pigs, (dogs and suppressor, night hunting) that will help.
I grew up in NZ, parts of NZ have/had pig problems, they never really got control on the numbers, till strychnine poising bought numbers down enough, that pig hunters with dog team, can keep them in check, My grandad and his brothers, walked of the land they had, after WW1, mostly due to pigs, after breaking the land, log and mill, burn and plow, seeding and sowing, stocking with sheep, His words, ("then the pigs moved in, we hunted them for 3 years and walked away") one of the small bits of wisdom he told me was, they used to burry a knife, under the fence, were the pigs push threw, a sheep feeling the prick of the blade, will back out a pig never does, also said detonators in spuds worked ok, but was too expensive, with no income coming in on the farm, after the timber was logged.
Every now and then in NZ, there is a flair up in numbers, and it is always an area, were farmers have restricted hunting access, and numbers have out grown local food source,
I haven't pig hunted with dogs for years, (live in Canada) but had a couple dogs for a few years, its a tough game on the dogs, and they get killed occasionally,
Any kind of hunting pressure normally push's them to nocturnal habits, I know every one want to shoot them , but rifle hunting, is way down the list of effective control. Suppressed at night works ok, till you don't get a clean kill, same with rabbits, once the squealing starts, its over for that area for a few nights.