It doesn't need structural strength, it simply
needs to trigger a flow
separation, which it would do quite well
I suspect that we are imagining different concepts
of "fuzz", though perhaps I was simply mistaken.
Basically, my thought was that hairs of any
substantial length would simply buckle, and thus
radically change in their orientation and effect on
flow separation. But the issue is probably moot anyway.
In passing, the
hands
can also be used to trigger separation.
Good point.
Cheers,
--Mike H.