Loon Outdoors: The WD-40 has earned a permanent place in many trout anglers’ fly boxes, and this variation combines elements of Mark Engler’s original pattern with techniques borrowed from the Brassie. In this fly tying tutorial, Dominic from Loon Outdoors walks through a simple, durable pattern featuring a fully-wired body, wood duck wing case, glass bead, and buggy dubbing collar. It’s an easy fly to tie and a great option for tailwaters, spring creeks, and technical trout fisheries where small flies consistently produce.

This pattern blends the profile of a WD-40 with the durability and simplicity of a Brassie-style wire body. Tie a few in different sizes and bead colours and see where they fit into your trout box.