I saw that "daphnia swarm" fly a couple of years ago and decided I didn't want to try that fly. Didn't seem like flyfishing. Thought I'd stick with powerbait instead (threw that in for you, Ron).

One trick I came up with 20+ years ago was a Lee Wulff method of giving them something different. When the swarms came on I'd offer the fish a large #8 3xl damselfly nymph and they'd smack that. Figured they'd get tired of eating "pindots" and want to go for a pizza... and about 1 in 10 do. Makes for a fun day.