I thought I'd share this because I think its pretty darn cool and it works. Had it out on a tandem nymph rig with a woolly bugger.
My fly fishin bud handed it to me and we tied em up and had some fun!
Its a thick green body wrap with a cut strip of the Sham-WOW cloth tied on
The Sham part expands in the water. Its great. I haven't tied in a long time but he just motivated me to pull the vise out.