Tenkara Fly Lines

Weight Forward Furled Line -

Triangle Tapered Furled Line -

Tenkara Level Line -

I personally fish a furled tenkara line.  Partially because they suit my style of fishing, partial because I make them.  I have a ready made excuse to give my long suffering wife whenever the mood to fish strikes - "Sweetie, I need to do some field testing." 

The best source for knowledge and wisdom I know for single strand Tenkara lines is Chris Stewart.  He has an excellent site, full of information - http://www.tenkarabum.com/tenkara-line.html