My father taught me at a very young age that a muddler was exactly the right fly for a hopper imitation... I used it dapping for big browns in tiny creeks in Eastern Washington when hoppers were thick and the takes were often spectacular. It was 100% floating...

And I tied them weighted for those same creeks and dredging those same big browns during those crepuscular times...

And for many years a yellow marabou muddler was my favorite fly for huge winter rainbows on the Kenai River... Three very different ways of fishing virtually the same fly...