Polywing Spinners are especially effective after the hatch when fish seem to rise consistently but refuse traditional patterns. At this time fish are often feeding on spinners or spent mayflies. Subtle changes in presentation is often what separates angling success. Changing to a fly with a different profile is the key to consistency. When the fish are selective the profile of a translucent poly, xelon or zelon wing shows a realistic impression that will make a tremendous difference.