We have to think seriously about conservation now, although it is chilling to realize there are catch and release fishermen alive today who don't know how to clean and fry a fish Jobn Gierach
Years ago I was fishing the Miller's Upper Trestle Pool deep into a mid Summer evening enjoying the dry fly action that this pool is noted for. As the sun became a memory and the moon began to rise I began to notice a rather dark, large mayfly in the air and also on the water. A specimen flew in front of me and I grabbed it, mangling it in the process. Even with the wrecked sample I knew what it was - a Leadwing Coachman, AKA Isonychia!!
The late Bob Rouleau, a great fly tyer and friend of the Millers, said that the leadwing coachman was the go-to wet fly on the Millers back in the 1930's and 1940's. It was the wet fly that is important because of the way this fly hatches. It thinks its a stonefly or a damselfly because of it's habit of crawling out of the water onto rocks and such to hatch. It's not like other mayflies that ride the surface and fly away although it can occasionally be seen doing just that.
Thomas Ames says that this is a season long hatch but I've only seen them in mid and late summer at nightfall. The Millers has them BUT the EB is loaded with them as evidenced by the nymph casings found all over the river in late August.
You can fish a leadwing coachman if you want but I prefer a robust pheasant tail nymph fished with short, quick strips. This nymph likes to swim and swim quickly!!
Although this fly hatches on stream side rocks a grey bodied comparadun in a size 12 cast upstream in fading light will bring the fish up.