Above photo: My original inspiration, the Dette's Catalog, legendary Catskill patterns. So it's safe to say that pretty much every other dry fly you see anywhere on social media, Instagram, YouTube, Internet blogs, fly fishing catalogs, or maybe even in your own fly box, is a CDC pattern. Cul de Canard, or “duck bottom” in French, is here to stay. Tie a blob of it on a shank, and you're off to the races. Make it look like a happy accident; “whamo,” it's cool because it's impressionistic? It's getting ridiculous. So before you start writing your hate emails and scathing DM's read and try to get in my head with this, or not. There are a vast number of materials out there in the fly tying universe. The properties of CDC are as follows: it's very buoyant, it dries easily, it is impressionistic, it is extremely forgiving (i.e., in its sculpting properties), it's very easy to use, and it comes in a variety of colors, including its natural given colorway. N...