Tying in biot tails

[tracker12]

Anyone have a good youtube video of how to tie these in.

 

[Maurice]

For Stoneflies?

Thread and a ball of dubbing at the bend to keep the splayed. First the far side then the near side.

Video over. the end.

 

[FrequentTyer]

I like Charlie Craven's explanation. Not a video, but pretty clearly described:
http://www.charliesflyboxinc.com/flybox/print.cfm?parentID=68