I was holding off until others had a chance to jump in first. I don't like to be the first to respond as it some times reduces the overall number of responses for whatever reason.
As has been mentioned above hogs are never gonna be far from water. They don't have sweat glands and have to use water/mud for cooling off. They also like to root in the soft wet dirt for roots and worm/grubs and other food. So wherever they are found they will be rolling and wallowing in mud. They will then rub on trees and you'll see the muddy rubbed areas if they are present in decent numbers. You'll likely also see the rooted up areas. It will look like someone took a plow or rototiller to it. Look for this especially along stream sides or near ponds or wet areas.
I've found them most active very early and very late and especially at night. Dunno if it is legal to hunt at night in TN, most likely not. If so tho that is prime time for them. Can you bait them? If so use corn in an area where they are seen and you'll likely get them coming to it soon enough.
If you can't bait or hunt at night then you're limited to finding where they spend their days and hunting real early and late. They don't see that well but their sense of smell is as good as it gets. Don't walk with the wind behind you.
They are noisy as can be. Especially if there are more than one of them and there usually are more than one. Listen for their sounds. Squeals and grunts and walking or running sounds. Ease up slowing like still hunting deer if you hear such and you might get a good shot.
Other hog sites sure. Check out Kevin's at
www.texasboars.com and tell him GB sent you. I think he has moved into dog hunting pretty heavily these days but he hasn't forgotten how to hunt other ways.
GB