With fish so keyed in on one plentiful live bait it can he hard to get their attention.
Ideas in no particular order...
> Fish EARLY morning, evenings, or in a good chop preferably with clouds. Fish bite better when they cant see you.
> Try lobbing a nightcrawler in front of them.
> Go for a reaction bite by pulling a lure about as fast as you can, you DON'T want them to get a good look. Spinner baits, lipless plug, 'Flat Rap' rapalas are good for this preferably as flashy as possible. Seems CRAZY...until you get bit.
>Try a 'Whopper Plopper' top water bait. Expensive but that one bait seems to enrage bass. Steady retrieve to get maximum 'plop'.
> Google 'wacky worm' & 'ned rig' if you dont know about them. I f you cant get them to go on a proper wacky worm you might be in trouble.
Oh and...fish your dock closely from shore before stepping onto it. Bass will wait in ambush under such cover but can spook with someone walking above.