The Sooty Olive is one of the better-known traditional Irish patterns. It imitates a number of different species of Chironomids (duck flies). Their best time is primarily in the spring, when trout won’t take the Butcher anymore, but the Invicta is not working yet.
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Hook Size: 10
Season: March to May
Natural Fly: Lake Olive (Chironomids)
Time: Early Afternoon
Where: Shallow Water
Tips: This fly is usually fished on the top dropper for best results, possibly using a Bibio as the dropper. Time the use to coincide with the first rise. It can be fished static in a mild ripple and is a good imitator of duck fly.