Check out the stickies at the top of the tying board. The hackle goes in the same as just about any other tail material. Look at picts from swap#5. On page 34, AWMiller posted the entire swap in one post. Several are made with hackle tails and JJJ's jigs are with duck. The hackle is the ones that look sparse instead of full and bushy. The duck is white and grey striped.