I recommend that you read High Percentage Fishing because it will help outline ten different things that will help you catch bigger fish. Interestingly, 80% of all fish 5lbs+ are caught on worms, so personally, i would go with a Senko or Ribbon tail however you like rigging it, and fish as much as possible In high percentage areas, and at high percentage times. Plus, if your fishing with a worm, your going to catch big fish and small fish, and everything in between. If you fish a 36 inch swim bait (sarcasm) like some have suggested, your not going to be catching nearly as many fish. So statistically its a no brainer, you can have fun catching lots of fish, and still have a great chance of catching a PB if you fish a worm.