Woolly Bugger Black Brown - Bugger. The Wooly Bugger Brown Black can cause quick a stir when it breaks the surface film, as it imitates a wide variety of trout food, these can include: dragonflies, damsels, leeches, etc. Leech Patterns have proven to be especially effective in the evenings. The early spring, and late fall are also times where the leech excels as the trout are skimming in the shallower waters. They essentially just depict an edible treat. The Black Brown Woolly Bugger has demonstrated time and time again that it is more than capable at saving a rather difficult fishing session.