Bob Quigley is and always will be a Master Fly Tier. These flies can be tied in all different color combinations.
We fish these emergers based on size. The larger the fly the larger the tippet. The smaller the fly the smaller the tippet. We fish this on a long 14-12 foot leader down to 4x or 5x tippet. I only treat it during fishing with Loon's Lochsa just on the wing.