Who knows why the trout aren’t eating your Hendrickson fly? The Shadow Hatch knows. Shadow hatches are so named because they are concurrent with — and less glamorous than — the hatch you think the trout are eating. In the case of the Hendricksons, the shadow hatches are likely to be tan caddis and BWOs, although in early afternoon, the tan caddis are the likely culprits. This phenomenon manifested last week during my lone outing. I was fishing a team of three flies: Hare’s Lug and Plover (caddis) top dropper, with two Hendricksons below. Hendricksons were in the air and there were rising trout. Yet all of my fish came on the Hare’s Lug and Plover. This is the strongest argument for fishing a team of three: droppers are always the fastest way to find out what the fish want.