Furled Mono Leaders
These mono furled leaders are a bit stiffer than their thread cousins making them more suited for larger dry flies, nymphs and potentially streamers.
UNI-Thread Furled Leader – Clearstream Fly Fishing
Loop to loop is bad - Try attaching your leader to the fly line
Are furled leaders better then single piece tapered leaders for fly fishing? - Quora
CyberBear's Fly Fishing: How to make your own furled leader
Making and Dying Hand Twisted Furled Leaders
Furled monofilament leaders - The Classic Fly Rod Forum
Shop Fretz Furled Leaders
The art of furling - Fly Fishing - SurfTalk
Furled leaders - Truttablog
Furled Leaders - Tackle Tips - Hastings Fly Fishers
Furled Tapered Leader CzechNymph Mono Clear
Why wouldn't you use a furled leader? - Fly Life Magazine