What I do is use a weightless texas rig for the senko or trick worm, then cast it along the edge of the dock. Let it sink to the bottom on the initial fall, then jig your rod slightly in random sets of 1-3 jigs with short pauses after each jig. try this in as many places as possible near and around your dock, and work down the shoreline if you can, casting in as many areas as possible. Once you get the motion right and cover more ground you should be getting more bites.
Also the bass will most likely be hitting it on the fall, so if you see your line start to tighten after the pauses, reel in the slack and give it a good hookset.