March Brown Duns General Information:
How long the duns remain on the surface of the water varies depending on the temperature, the colder the day, the longer they tend to drift before flying away. The duns are an important stage to fly fish with so watch for them especially on the cooler days.
Presentation Information:
March browns like other mayflies are normally found in the faster moving waters and the rougher pocket waters but it depends somewhat on the species. In these waters fish the dun imitation in an upstream presentation along the seams of pocket water and the edges of the runs. Use a 2 foot size 4X tippet and keep the leaders around 8 feet in length. As with any dry fly the presentation should be delicate. In the more moderately moving water where there is little drop in elevation, you may consider using a down and across the stream presentation. If so, a longer leader and a smaller tippet size may be more appropriate. As a rule of thumb, stick to the current seams and make a number of short slightly upstream and across casts. This will keep the fly in the target zone longer.
See the new double sided fly boxes.
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