I use a Lowe Alpine Mountain Cap


It's water proof breathable fabric, fleece lined and the brim is stiff and short enough not to flap about in the big breeze. Keeps your head nice and warm for winter sailing. I combine it with a pair of prescription Barz goggles for ultimate head and eye comfort on wild days. With that get-up on and a breathable dry suit sailing becomes soooo much more comfortable.

Chris.