I live in the mountains, with dense woods and rivers, very steep and very rocky. Its not perfect, but you can drive boar on almost any terrain except marsh/swamps I think. the key is to have a very good understanding of your terrain and your quarry. in most terrain boar will follow set paths based on geography, they will also set up tent in specific areas depending on the weather. The weather is the key to predicting where the will be in a given area. rain, snow, wind, sun etc will have a direct impact on the pigs position on any given block of land. when it rains they seek cover, dense vegetation, if its hot they are near water under cover, if it is cold and windy but sunny, they will be high up in any small patch of warmth away from the wind... and so on... after a few years we no longer think about it, but it pays to pay attention to these details in the beginning. these changes could also be influenced by food sources so it pays to also notice what they are eating.
to make a drive work, even a mini drive of 4-5 guys + a pack of dogs, you need to track them to their rough location, then check they are within the given area buy checking the escape routes for tracks, then you set out the guns to the best escape routes and once in position put the dogs on the trail driving the boar to the guns. we do that with foxes too. we only loose the hounds when everyone is in ready.
more specifically when we go out we split up in the morning. 3-4 cars looking for the freshest tracks. then we debate the best option based on what we saw and where they were heading, a herd, a single large male, we try to avoid those with small piglets etc... its not possible to single out an animal from the sounder with our local boar, they are wild as f#@k. sometimes they split up, other times they run together. large males are not usually within a sounder but usually are a bit off from the rest or alone with a younger male (which they send/push out as scouts/cannon fodder when in trouble and haul ass in the opposite direction), females with a litter will protect the litter by trying to divert the dogs away from the babies, we avoid these because they will get shot and the litter will die.
then we track the chosen boar trying to figure out where they are, again this is based on weather for the most part and knowledge of geography. from there what we do is also based on how many we are and what dogs we have with us, the hounds are good at tracking and driving them forward, but we also have 3 or 4 large mountain dogs (cao de castro laboreiro, cao da serra da estrela, husky) that will also catch and hold anything but the meanest male.. because we have a legal maximum of 5 hunters/group its not easy to cover the escape routes so those going in with the dogs also carry shotguns because the larger pigs dont usually want to move and will tear up the dogs.
plan it like a military ambush. find them, make a plan, try to make the plan work... its very gratifying when it works. minimum noise is essential.
it beats paintball by a long shot.
just so you have an idea,the first pig i tracked this year i was alone with my beagle, i was after foxes, but because i found the tracks i decided to find out where he was, single medium pig. we tracked him for about an hour, at times visual tracks but mostly just my beagle on the scent(on a leash). we ended up at a small patch of dense shrubs of no more than 100m2 in a sunny patch out of the wind on a small hill, it was very cold and windy that day. the tracks went in but never came out. we circled the patch twice to make sure he was in there. no tracks came out so i sent in the beagle just for the fun of it because i didnt have any slugs with me and it was impossible to get back up. and anyway once the dog started barking at him he headed off the other way as he had scented/heard me anyway. but if there were two more guys with me we would have had him easy. and we wasnt very big or my dog wouldnt have moved him either.
I have tried stalking them but the vegetation the boar hide in is too difficult.
