Absolutely Mike, the calf tail in the Winters Hope - same idea. There is an example in Classic Salmon Fly Patterns (Radencich) where I found mohair as a topping - but perhaps the Winters Hope deep down in my subconscious is where the idea actually spawned. It's a pattern that Im far more familiar with than the classics. The tail in this fly is the yellow back feather of the GP you mention - notched in a V near the base and drawn in. The tips are very fragile. The white neck is where the heckles come from - gray rainy week and white seemed like good back ground.