The most popular steelhead fly of them all, the Green Butt Skunk has certainly taken its share of steelhead. The Green Butt Skunk’s contrasting colors of its wing, body, butt and tail may be the key to its success. Floating line or sink-tip, Alaska to California, if you’re having troubles getting confidence in your fly, put on a Green Butt Skunk and keep on casting with new hope. Size 4.