In my experience, the most effective way to hunt them once located, is to set up like doing a deer drive. Know and trust the guys you are hunting with that they will keep a "LEVEL" head. Baiting them will work for only one shoot off the bait pile if the boars have been hunted before, so make it count.
Their tracks are very close to a deer, with the exception that a boar will always have their dewclaws offset to each side directly behind the tracks. It is amazing the vertical terrain they can climb, too!
This winter was perfect to hunt them as the deep snow forced them to stay on their established trails. If you did get them off the trails and into the deep snow they would play out fast, however on their trails or when there is no snow these animals are incredibly fast and have an amazing endurance. I managed to cull 38 in March, lots of tough walking. haha
Lets discuss how aggressive they are. I have only had 6 out of 248 boars that I have culled truly come after me. That's a pretty small percentage. Mind you it is fairly exciting when it occurs. Most of the charges have been sows after I shot smaller pigs and they had squealed. One sow clipped my pant leg as she come at me out of thick willows, that was somewhat intense. The 2 boars that came after me had deliberate intentions of doing harm. When you spook them up not very often will they stand their ground and you are shooting at the hind end as they are fleeing. This is why I mainly use a .308, 30-06, or my 7 mag. Before anybody asks about small calibers, I have used a .223 in the open .... right between the eyes anchors them every time. I used it once in the thick brush, the first shot at a standing pig was a headshot. The rest were at running pigs; not so effective. Heard lots of ricochets. I have hunted with guys that used a 12 guage and 000 buck. Out to 50 yards using a full choke was quite effective. I guess what I am saying is to use whatever rifle you would use for big game hunting.
REMEMBER that they are not the invincible creature that is tried to be portrayed on the "reality " shows. Anchor them in the vitals and they won't go far. Hit them in the guts and you will be following them for quite a while.
If you can catch a bunch of them sleeping in the winter they can and usually sleep piled up. This is quite a thing to watch as the first round into the bunch sends them off literally in every direction! (think 0 to 30 in a blink of an eye)Quite often you can get more than 1 with the first shot. Once you get them running they generally run single file. This is in winter snow conditions !!! Summer time is a whole different story and they are much harder to hunt not to mention the difficulty goes way up and safety heads south with all of the leaves and grasses. That is why I rarely hunt them in the summer, plus too busy farming.
The boars that are around here are, for the most part, nocturnal. Rarely will you catch them out in the open during daylight unless they have been "pushed". So either at daybreak or right at last light is when you might catch them out feeding in the open.
You can google to pics of the rooting that they do and once you see it, you will be able to tell right away that ferral boars are around. I have found spots in the bush where the pigs have found a root or something that they like and It looks like a small tandem disk was used. When there is snow on the ground and the animals are feeding in a stubble field; it looks like straight lines of rooting. This usually follows the old combine rows.
To the OP have fun and shoot straight
Yup, Pigs should qualify as Dangerous Game and that includes domestic hogs as many a farmer can tell you. 
