Mark Engler: The Man Who Created the WD-40

Mark Engler: The Man Who Created the WD-40
Mark Engler on Vallecito Reservoir, Colorado

On his own time, Mark Engler is a pike hunter, but he's best known as one of the top guides at Duranglers Flies and Supplies, and as the creator of the WD-40 fly. The WD-40 is a guide favorite because it has only two ingredients beyond the hook and thread: mallard flank feather and chocolate rabbit fur dubbing. The simplicity of this design allows even mediocre tiers to churn out a dozen flies in 15 minutes. The subtle, no-flash Baetis imitation has the perfect silhouette to imitate a Blue-winged Olive nymph with swollen wingpads, just ready to burst into a full-blown dun. Here's a one-minute lesson from Engler on how tie his trademark fly.

The iconic Colorado guide is also the subject of a new 7-minute feature film that tells how Engler pursued a lifelong dream to hunt and fish "anytime, every day. Whenever I want." According to Engler, his dream came true, but along the way he found three ex-wives, and sacrificed much more to satiate his passion for the outdoors. 

Mark Engler on Vallecito Reservoir, Colorado

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