The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
Paul, when I used to kill trout on a regular basis (something I haven't done in years but who knows, depends on how long it is until my next job project!) I would always open up the stomach to see what was in there, and it can be quite an education. My fly fishing mentor once found a great big water beetle in a brown trout's guts, not a very big fish either. Then again, on one stretch of stream I kept finding dragonfly nymphs in stomachs and proceeded to tie up what I thought were decent imitations but they wouldn't touch them. But, maybe they weren't as good of imitations as I thought or I wasn't fishing them right...
Speaking of catfish, I actually caught not one but two in a (stocked but for some reason largely unfished - advantage mine!) manmade pond in Texas (same place I caught my biggest largemouth of all time). Two channel cats in the 17" range, one of which actually took one of my "micropoppers" (visualize a deer-hair bass bug tied on a standard #10 dry fly hook) and the other one of my silver/grey KBFs in size 10. Didn't look in their stomachs...
Great story about the worms! There's a lesson to be learned there for sure. Maybe that's what I need to do on the Pine, which seems consistently silty right now with all this danged rain...Some reddish-brown chenille on a hook with a little weight...
Jonathon