The large lipless crankbait pressents heavy weight fish with an opportunity to make the most of their feeding efforts. Burn one knock over grass flats, slow roll it or yo-yo the lure off the bottom. Quickly you will see why the one knock's acoustic performance and vibration cannot ne matched. The single large weight presents a new sound of fish with a rhythmic knock instead of multiple bbs rattling. The one knocker's tungsten-lead rattle will make a difference to highly pressured fish.