The Blue Winged Olive is a critical Mayfly to have in your fly arsenal. Often the most prolific hatch in nasty weather, trout key on them both surface and subsurface. The CDC Oiler puff BWO is an emerger imitation that will take the pickiest of fish in the flattest of waters. Have a few in the box if you are out on the water during the cold months ahead.
CDC Oiler Puff BWO
Hook: TMC 3761 #18-20 or Daiichi 1560
Thread: 8/0 Rusty Dun Uni
Rib: Small Olive Ultra Wire
Tail: Coq De Leon Tailing fibers
Body: Cream Uni Floss with ChartPak Pale Olive Dorsal surface
Hackle/Legs/Wing Buds: CDC Oiler Puff Natural