well, after 200,000 miles on a slew of bikes I actualy have one of those which works great with a helmet, on a bike, but on the water where my head rotates alot, and I am moving alot, with the amount of movement I do, I end up pulling out strands anyway.
Likewise with a doo rag.
I am trying to learn to braid my hair, but... bleh. perhaps I need a significant sailing partner to help out with that.
-- James