Anglers, especially beginning anglers, generally overvalue knowledge of spots, which basically amounts to knowing how to catch the same fish twice.
Lefty Kreh was a superb caster with efficient mechanics, just as the great casters of today are.
Tunnel vision of the mind. I’ve watched friends succumb to the effects of this phenomena many times. They end up going fishing only under sets of conditions known to be optimal…
As your flies float downstream, make another mend, feeding more line as you go.
Accomplished anglers use their eyes to study the water.
Fish like changes in currents, depth, water color and structure.
