Here is a simple modification to a great fly that will increase tying efficiency and will not change the fly's effectiveness. Plus, with this one change, it is still a Barr Emerger.
Hook: Dia-Riki 125 #18-24
Thread: Uni 8/0, Iron Gray
Tail: Brown hackle fibers. (use only about 6-8 fibers)
Body: Olive Brown Superfine Dubbing
Thorax: Adams Gray Superfine
Wingcase: Spirit River Gray Floure Fiber