I have tied A LOT of Muddlers this year. I've actually only fished a few of them. My best one has been a size 12 Muddler. I've literally fished them until all that's left is a little bit of the tinsel on the hook, and a spun caribou head. I'm lucky enough to work near a creek that is absolutely loaded with Green Sunfish. Those fish literally ripped my Muddlers to shreds.