Nyman’s DOA Cripple Green Drake imitates the hatching green drake mayfly that is having a bit of a problem getting through the hatching process. Vulnerable to hungry trout, the Nyman’s DOA Cripple rides low to the surface with the yarn tail imitating the nymphal shuck of the hatching insect. Poly yarn wings and a traditional hackle keeps the DOA Cripple easy to see on the water. A great fly for a great hatch.