After years of having polarized glasses; I've given up on them for boating;
mostly becuase I got headaches using them as the polarity "shifts" as the boat
heels over or swells adjust; you don't hold your head "flat" to get the
polorizing effect.
I have worn Glacier glasses on the boat, actually all the time, and am glad; the
block most of the glare & keep my eyes relaxed...