I posted this in another thread but it probly should be here.
Winter time dock fishing is fun. Look for docks that have clean, moving water. Also look for bottom that has opposing contours or potholes relatively close to the docks. The presence of bait is always a good sign also. I like the first 2 hours of the falling tide best for fishing docks. Football head jigs (like the ones for bass fishing) with gulp ghost shrimp are a great choice of baits. Or you can go with live shrimp with a split shot.