The Mercury RS2 is one of my staple patterns in my box. It passes for so many bugs and does it really well. It often comes out to play when I need an additional trigger such as a bit more flash in deeper water or even off colored water. I especially like this pattern in a size 22 for trico nymph and emergers and sunk spinners.
SUPER FLY - Pat Cohen's 6 Flies for Warmwater
14 hours ago