Here's a decent SBS from Allen McGee (his book, Tying and Fishing Soft-Hackled Nymphs, is excellent, by the way):

http://www.flyanglersonline.com/flyt...070207fotw.php

If I want it a little sparser, I'll strip the fibers off the side of the feather that is wrapped down first (hard to explain; I'll take a pic)



and a good video on how to use those bigger feathers (of course, it helps if you can tie like Craig Mathews):

http://www.youtube.com/watch?v=plCfNp1MB2A


Regards,
Scott