A drop shot rig is essentially a line tied to a hook with a leader underneath, so the bait hovers off the bottom and creates a very natural, realistic presentation. This rig is especially effective in clear- or deep-water situations when it might be tough to get a bite from otherwise wary fish.
As the angler drags the weight across the bottom, the a normally nose-hooked worm dances a few inches above and creates an outstanding presentation for spooky fish. Even with the slightest movement of the rod tip, the angler can incorporate a lot of movement into the soft-plastic worm and get bites.