Such great advice and wisdom. I had the opportunity to fish with a gentleman in the late 80's on a river in AR. A slow moving section of water that tailed out into quick runs and riffles. He provided a lifetime of instruction in little more than 2 hours on micro currents and drag. It was simply amazing to watch him count down to the strike. He knew if the drag was accounted for properly and the depth of the fly was correct there was going to be a strike every single time. While color and size of the fly were important, it was not as important as getting the drift right. It has changed the way I fish eternally.