It took me seasons of trial and error to understand this truth: On some rivers — especially those with larger trout — much of the water after dark is a dead zone. Nothing happens, no matter what flies or tactics you throw at them. Drift or swing big flies or small ones. Hit the banks with a mouse or swing the flats with Harvey Pushers. It doesn’t matter. On most rivers that I night fish, there are long stretches of water that simply won’t produce.
But in these same waters, there are sweet spots to be found — places where the action is almost predictable (by night-fishing standards), where two, three or four fish may hit in the same spot. And then just twenty yards downstream . . . nothing . . .