The design of the Troll-Tech crappie rig allows anglers to use one complete rig to Tight Line Troll, Spider Rig, Slow Troll or vertical fishing techniques. The Troll-Tech crappie rig is easy and quick use, you can tie one on in seconds ready to fish. The Troll-Tech crappie rig is designed to be able to catch fish two at a time!! The top section on the Troll-Tech crappie rig spins 360 degrees that will prevent tangles and line twist while trolling or vertical fishing. Great for night fishing too!!