Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
Ed Engle and AK live somewhere near me, along with Gierach, but I've yet to meet them. Then again it would have to be onstream and none of us would do more than skulk away mumbling something about "elbow room".