Fly Tying: Extended Body Hollow Fleye - Mono Loop Rig and Hollow Tying on Mono 

This video breaks down Popovics' Hollow Tie Technique on a Hard Monofilament Extension followed by a discussion on Hollow tying on Mono vs. Dubbing Brush/BEAST extensions.
Secondly, the video highlights how to Rig a Single Strand of Mono for use with the PR378 - which I call the Mono Loop Rig. This Swimbait rigs allows for tying in the round on a single strand of Mono, while connecting the rig to the Hook for proper support, balance, and rid.
Hard Mono - Perlon Hard Monofilament Leader Material
30lb, 40lb, 50lb, 60lb
Thread: Danville Fine Mono 0.006" dia
Hook: Ahrex PR378 in 6/0
All the best
-Gunnar
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