There are several rigs that can be effective for catching big bass off docks. One popular rig is the wacky rig, which involves using a weighted stick bait worm like a Senko or Missile Bait's 48. This rig is often used when fishing in areas with a little more depth, such as the back or side of pockets where docks may be hanging over six to eight feet of water. The wacky rig can imitate both baitfish and brim, making it a versatile option. To rig the wacky rig, you can use a Gamakatsu G Finesse weedless stinger hook to help prevent snagging on grass or light sticks. It's recommended to use a 10-pound fluorocarbon leader, such as Sunline Sniper, for added strength when fishing around docks and other cover.

Another effective rig for targeting bass on shallow docks is flipping and pitching. This technique involves using a heavy rod with a 4/0 hook and a creature bait like a creature hog. The heavy rod provides the power needed to drive the hook home, while still having a bit of tip for accurate pitching and casting under the docks. It's important to be quiet and stealthy when fishing around docks, as the fish can easily be spooked. Using a heavier line, such as 17-pound fluorocarbon, and a fast reel like the Revo STX eight to one can help you handle big fish and make accurate casts.

In addition to these rigs, jigs and Texas rigs can also be effective for catching big bass off docks. Jigs, such as the half ounce Strike King Structure Jig, are great for skipping under docks and can be paired with a trailer like a craw or creature bait. Texas rigs, on the other hand, can be customized to the fishing situation. For offshore brush piles, an old monster 10.5-inch worm can be used, while a Berkeley Pit Boss is a good choice for fishing in shallow water. The key with these rigs is to make a vertical presentation, allowing the bait to fall vertically to the bottom and then hopping it across the bottom.

Remember, it's important to observe and refine your approach as you fish different docks. Look for patterns and key features on the docks that are holding fish, and focus on those areas rather than trying to fish the entire dock. This will help you cover more docks efficiently and increase your chances of catching more fish.

Please note that the information provided is based on the video context and my expertise as a bass fishing guide. If you have any specific questions or need further clarification, feel free to ask.