This is indeed a unique rig, never been anything like it before. It is used for game and pan fish, for bullheads and catfish. Put sinker on long arm and bait on short arm of bottom bobber rig. Cast from shore, out of boat or off a dock. Sinker takes bottom bobber rig to the bottom, built in float holds rig upright. Fish with a slightly slack line. On retrieving, float causes rig to rise as line is tightened, thus bait comes in free from snags.