I made a video on the Fancy brassie. Twist these up in small sizes and fish them as a dropper. There very effective in other colors also, with ultra wire you can tie them in any color of the rainbow. Use medium wire for 16s and use small for 18s and 20s. If you want to go smaller then give the x-small wire a try. You dont have to use peacock or any collar at all. Just a black thread head works well. If you do use peacock use hurls from the eye. You can get some nice short fibers from the center eye area.