Hi-Vis Griffiths Gnat
This fly is a no brainer. For Umpqua it's simply "about time we did". A Griffith's Gnat that can be seen by the older than 50 crowd in all light conditions; visible to eyes young and old in low light. Time to quit guessing and striking when fish swirl near your fly, time to set the hook when trout swirl ON your fly.