Double action theory was born to narrow down the target from the bottom of the surface to near the bottom and approach it more delicately than before. By adjusting the movement like a spoon, you can approach with two types of actions in both high speed and low speed range. By approaching with double action, it is possible to search more clearly which movement / speed the trout prefers at that time. The flight distance, which is also a weak point of the crank, is dramatically increased by making it one size larger than the standard. Considering range control, slow floating is adopted to cover the range shift due to floating in the low speed range.