Over the years, I've caught the most trout in stillwaters with this particular Woolly Bugger. I try it first when fishing lakes I've never fished before. It is a favorite for John, Rocky and I. John and I first discovered how well it worked at a private lake in Central Oregon that held huge trout. We did best primarily next to the shore vegetation so we thought that it might represent a dragonfly nymph... there were a lot of dragonflies at that lake. However, we've since found it works when fished shallow or deep so we tossed out the dragonfly nymph theory. Evidently there is something about the color combination that the trout find edible. John ties his a little differently and uses a grizzly hackle instead of black. I tie them in both fashions but the black hackle works better for me.... so, it's an option. The Black & Olive Variegated Woolly: Hook: Daiichi 1250 (or similar) sizes 6-10 Bead head: (optional) Gold Rib: Green wire Tail: Black dyed blood quill marabou Body: Variegated black and olive chenille Hackle: Black saddle or grizzly It's a very basic pattern but the combination of colors is key. It doesn't, however, work worth a hook for warmwater species.