Kind of ugly, but I intend to test it in July. Squirrel back fur for wings.
The top picture uses hydropsyche tan caddis zelon dubbing. The hydropsyche is the dominant caddis in the Yellowstone area a significant portion of the year. This one is not the ordinary pattern - the elk hair - but I really think it may offer advantages.
http://i1101.photobucket.com/albums/...h/IMG_1621.jpg
http://i1101.photobucket.com/albums/...h/IMG_1608.jpg