The RYUGI Deep Tracer straight from Japan the shallower the water depth, the more plug options you have. However, as it gets deeper, the options become narrower. It was difficult to capture the deep range with small crank baits and large big baits. There was also a way to dive with a board weight or a heavy Carolina rig, but the former had the weakness that the plug action collapsed when the weight increased, and the latter had the weakness that casting performance and snagless performance deteriorate. The movement of the plug / cast performance is kept to a minimum and the aforementioned plug is sent to an area that could only be reached by a worm or large crankbait while maintaining snagless performance. That is this deep tracer. An invasion of an area that has so far refused to invade such plugs hits a different dimension.