Jigs and wood just go together. Bass love heavy cover, and a jig gets in and gets out with a minimum of hang ups.
Regardless of whether you're flipping, pitching or casting, there's gotta be a technique to how you approach the wood. My favorite way is to start at outside branches-the edges of the brush--and work my way into the heavier cover. While the biggest bass might be in the center, I like to try to get fish around the edges first before I disturb them all by heading straight into the heaviest cover.
You've only got a few chances to hit the fish before they're spooked, so you don't want to ruin your fishing right away. You also have a better chance of landing a fish you hook around the edges where the cover isn't quite as thick.
While one cast, flip or pitch usually isn't enough, you also gotta make sure the first one is a good one--because you might spook the fish! And try to make your bait contact as many limbs as possible. That'll help you get the attention of any bass in the bush.
For wood, my go-to jig is the Brush Jig from Elk River Jigs.
Whatever jig you choose, though, make sure it has a good fiber weed guard and a head shape that allows it to come through branches without getting hung up too much.