Some west coast anglers (and maybe others, or probably others) have been developing and refining twisted (not exactly the same as furled) leaders for big fly/big game fishing over the last few years, including tarpon and bluewater flyfishing. They are typically made from 12, 15 or 20lb test mono. I have made a couple and they are fairly easy to make.
Some instructions are here
www.excellentadventures.org/Excellent%20Adventures/3_stage_leader.htm
www.excellentadventures.org/Excellent%20Adventures/big_game_leader.htm
The instructions do not show this, but many anglers are incorporating a small high quality barrel swivel into the tippet end of the big game leader to allow for quick tippet changes and prevent twists from building up in the leader as can happen with many topwater patterns that have a tendency to spin during the cast.
You can buy twisted leaders here
www.twistedleaders.com/index.html
(I have no connection with either website)