Yep... peetza is correct...
the wild hog will be found where there is water for drinking, wallowing and food as well as defensive position.
They are wise to put themself where any possible predator will work hard to get to them. So swamps with lots of thicket type cover is a good start. They are voracious feeders. They love the "lush" vegetation growth like lilly and tubor plants as well as grubs, worms and such. The growth along the edges in the water often get rooted even though the hog has it's head under water to do it. If these factors are present near food crops, they will gravitate towards there.
Hunting them with a gun from a "position" like deer is really tuff going and usually requires bait or shear luck.
Spot and stalk is, IMHO, the only option to increase the odds. Finding wallows, rooting and beds will greatly help but it takes multiple trips to determine the use of these areas as they migrate around a bunch. Ask more direct questions and I will try to help...
Our member bswiv shoots quite a few with his wife and will have good info for gun hunting them. I am too lazy to do the gun thing. I just turn loose dogs and run thru the woods all night to grab them and tie them up for live catch...
Plus I don't like mixing guns and alcohol but dogs and booze mix fine...
Brent