Drop-shotting is typically a light line technique usually associated with bass; but, can also be used for many other species.
Having electronics on board is especially helpful with this sure-fire method for catching fish.
The whole idea of this finesse technique is to keep the bait suspended off the bottom as you fish it with a slow retrieve.
A dropshot specific hook is tied on gap up, leaving a tag end in the line as long as needed for bait suspension off of the bottom. Finally a dropshot weight is clipped on the tag end.
Minnow, goby and worm imitations are terrific for this technique.
When fishing the dropshot, try imparting subtle actions to the bait all while keeping the sinker in touch with the bottom. The slow undulations of this movement almost always triggers a bite.
For more information, talk to the pros at Sail, the Canadian Outdoors Superstore.