WHEN TO PROGRESS DOWNSTREAM
While the general consensus is to progress upstream there are times when a downstream approach is more advantageous. Given rapid flows, or when high water occurs, and where it is safe to do so, heading in a downstream direction prevents fatigue setting in as you’re not battling raging currents. The work rate of casting/retrieving is massively reduced now as you will be using the flow to help present your flies rather than constantly trying to keep in touch with them in fast water if they’re hurled upstream. Good drifts and presentation can be obtained by dangling a team of heavy flies close to you with a vertical rod and outstretched arm. The rod tip is then quickly dropped to the water, creating several feet of slack line. This allows the weighted bugs to plunge deep unfettered (diagram 12). Admittedly, drifts are generally shorter than when flies are lobbed upstream, but this is an effective method where flows are boisterous.
Dropping rod suddenly creates slack line for nymphs to plummet to the depths when presenting downstream Strong flow