The Old Au Sable Fly Shop Fishing Report Hex have blown up on the Au Sable since the last report. While it certainly isn’t over yet on the Au Sable it is well past peak emergence.  The bugs will be less consistent than they have been over the last week, but nice fish will continue to eat the big flies each night for at least some part of the hour after sunset.  The flights will be in fits in spurts now.  Some nights will last only a mere twenty minutes, but Iso’s and Cahills wil...
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