Today was one of those days I was skunked. It doesn’t happen all that frequently, but when it does happen, it stings. It had already been a rough week with several lackluster guiding trips in the books. Luckily, the guests that I took out this week were new to fly fishing so just catching their first fish was the goal of the day. It wasn’t easy for one particular guest who fished all day, working every inch of every productive run to catch her fish. Reports from other guides indicated I was not alone in having a difficult time.
As a skilled angler, I have an extensive portfolio of tactics from which to choose when the fishing gets difficult. For me, the most important skill is to know why fishing might be difficult and then how overcome it. In the spring, the challenge might be high dirty water with the tactic being heavier flies to get deep or searching for fish along the margins of the river where fish seek rest from the nagging current. In the late summer when water is low and clear, it might mean fishing smaller, less flashy patterns with lighter tippet. Winter may require small midges, egg and worm patterns.
This week has been an enigma to me, as I had no idea why the fishing was so difficult. I simply could not recognize the cause for my failure. I tried large searching patterns in the deep slots, small dark patterns on the edges and shiny emergers in the film. I tried the finest tippet I could use on the longest leaders that I have. I eventually started blaming the full harvest moon shining a bright light on the water allowing fish to feed at night and rest during the day as cause for the difficult week on the river. I am not one to dive into folklore, legends and myths, so I remain keen to dismiss lunar phases having an effect on fishing, as easily as I dismiss the notion that being a capricorn makes me an asshole solely based on the location where Jupiter and Saturn were located on the day I was born.
Today, I am blaming the full harvest moon because I have also experienced dismal fishing on other days immediately following the light of a full moon keeping the river illuminated all night long. I have stayed awake late at night to watch blizzards of caddis or aquatic moths emerging and fish feeding in the lunar glow, only to catch nothing the following day. Is it possible to have good fishing during a full moon when the night sky is darkened by overcast conditions? In other natural systems, many species of fish and amphibians time thier spawning cycles with specific lunar periods. Is it likely that the moon can affect fish beyond illuminating the night sky? The scientist in me is beginning to wonder. I’m now interested in overlaying the lunar cycles on top of my catch data charts to see if the peaks and valleys in my data can correlate to lunar cycles, including moonrise and moonset. Maybe the fishing will be better tomorrow as the moon wanes?
Addendum: I added a chart with full moons overlaid on top of catch data and see no relationship between full moon and effect on fishing success.