This rig consists of an egg sinker allowed to slide freely on the main line. Followed by a swivel. Attached to the other end of the swival is 1-3 feet of leader line. The rig is finished off with a worm hook. Usually the soft plastic is rigged weedless. Also you can attach a small float or inject the worm with air to make the soft plastic float. Some people also add beads or rattles between the egg sinker and the swivel for added sound.
List other fish you have caught using this rig.