This a pattern associated with Czech nymphing that may have decent applications for stream/river flyfishers. I have attached a link and within that link is an excellent site with detailed instructions. My lead is that although it is a bit more time consuming to tie than a San Juan Worm it sure looks a lot better.
http://swittersb.wordpress.com/2008/...ast-it-should/
Sharing the Info,
Bumpatter