The purpose of the dropper shank is to design a shank with a open loop in the rear to Split Ring Hooks on/off. This loop is dropped/lowered below the axis of the shank to increase the leverage of the bare hook creating a keel for the fly. These hooks swing freely, rarely fowl, and open the Gap considerably as compared to a standard Single Hook option. Because the shank is a custom build, the length is customizable relative to the flies length allowing you to place single hooks farther rearward which becomes advantageous in large patterns for Slash and Grab style predator feeding habits.