tons and tons of most excellent points in the comments above
hey Sandy !
personally, for the wing, atm i can't see past EP International fibers. (permanently treated to float)
as a 'standard dry fly' it floats all day.
pull the fly under, it pops back up, all day.
slime it on a fish, rinse it off, false cast twice and it's back to floating all day.
it comes in many colors so just mix to match the strands just like dubbing and trim to shape after the completion of the fly.
it's such an easy material to work with.
cheers,
marc