JCPs serve as the side eyes on streamers and other flies with attached cheeks. These jungle cock substitutes are chosen based on the height of the wing and the available space on the side of the fly.
Position both eyes against the front wing before securing the first one. They should be long enough to keep the pattern visible without extending beyond the streamer’s outline. Leave a free anchoring area at the front, then gradually tighten while checking for symmetry. The head finish should secure the base without obscuring the decorative portion. The number of pieces per packet varies depending on the size selected: check the packaging for the specific model.