Isonychias or Slate Drakes can be very reliable hatches during the mid to late season. This drake fly is an easy-to-see pattern that sits down in the film and can be very productive when you find yourself with these gray-winged mayflies on the water. Color, Natural.Fly in sizes: 12, 14.
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Customer Reviews for Dave's Oh-So-Iso
Review 1 for Dave's Oh-So-Iso
October 11, 2011
from Central NJ
"This fly was delivered in the morning and by late afternoon accounted for six nice brown trout. Pheasant tail wasn't working, tied this on my 6x tippet and three casts later the action started. Great NJ fly!"