If you want some movement in your flies you must try this dubbing. Ideally used in a dubbing loop. For tied down wiggle material try using the Wishbone Cutter/Bodkin and it will only cut fibers that have tension on it not loose material that scissors would cut through.
WARNING: Cancer & Reproductive Harm -
This product may contain chemicals known to the state of California to cause cancer, birth defects or other reproductive harm.
http://p65warnings.ca.gov/