We often call this fly the one winged wonder! So many times mayflies just don’t make it through the emergence process very well and end up crippled on the surface. This may be the best fly to match a crippled mayfly ever. Invented by Bob Brooks on Hot Creek in the Sierras, it has become our favorite cripple pattern here on our spring creeks. We recommend cutting the pink z-lon down to the nub for better results on the water.