Next to setting the hook, the bane of the average soft plastic lure fisherman is keeping the lure rigged straight. Time was, when most Texas rig fishermen (myself included) pegged the lure to the hook eye with a toothpick. In extremely heavy cover, this is still an option, at least with worms/lures that are meaty enough to handle the toothpick without excessive damage. But it's also time consuming. Find a toothpick, insert it, clip it flush, etc. Just one more thing to do every time you rerig or replace your worm.
Of course there are hooks that have barbs on the shank, but those barbs have always seemed to me to do very little. Most are actually way too far down the shank to even contact the worm when it's rigged right.
The offset ("Z-bend") style worm hook that most fishermen prefer to use today does help a bit. But even when super-gluing the worm to the kink in the hook shank, I find myself re-rigging and adjusting the worm too often for my taste.
That's where rebarbing comes in. Rebarbing is simply using a piece of heat shrink tubing to add a barb to the front of the hook to help hold the worm on. Although some west coast fishermen have been doing this with straight shank hooks for a number of years, I prefer a variation of it with bent or offset shank worms that I've found to really work well. It's especially valuable in flipping heavy cover where a heavy slip sinker is always trying to push the head of the worm back. And for lures like the Lunker City Salad Spoon, which are used in heavy cover, but rely on a very streamlined nose section as part of their design, or for ludicrously soft plastics like Yamamoto's Senko, it's a night and day difference.
That's all there is to it. You can even combine it with gluing the worm's nose to the eye and kink. I've done that when practicing for a tournament with the hook point cut off behind the barb, just looking for hits, rolls and blow-ups, and used the same Salad Spoon for several days without having to re-rig it!