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.
I just stumbled on this thread and find it very interestin
g not only as possibly a "hot spot" on a dry fly but still after fifty plus years of tying I still sometimes crowd the eye and have a heck of a time getting a 6X tippet through a material clogged eye while on the river and the fish are rising.