Tying SBS and underwater action on the Maroon’n’black Wool Leech. The yarn or wool leech is a simple, but effective imitation on leeches in freshwater and ragworms in saltwater. This is my take on the classic pattern. The glass bead seems to work great on these flies, if you want more of a gliding than a jigging swimming motion: adding just enough weight to give a slow dive, but not going totally jigging like tungsten or metal bead flies do. Besides: when sun hits these beads they glow beautifully. The tail is arctic fox hair and the rest of the fly is build up using my own Woolly Sparkle Dub. The way these two materials work together is cool – giving a very smooth swimming motion.