Like many of us here I spend a great deal of time on the water. Often out in the sun, almost two decades ago I bought a Tilly's wide brim hat, it was not cheap, but it fit well, shaded my eyes and kept the the sun off my thinning hair (there is still some there, I just keep it short)! If you have not worn a wide brim hat, one of the biggest pluses is it keeps the rain off the back of you neck! It also come with a lifetime warranty and I just got back my 3rd hat that I sent back after wearing it out (covered for wear and tear)... For the cost of shipping ($8 something to get it back) they sent me a new hat... It is great when a company stands behind their product and I thought a shout out was in order!
A little info I wrote long ago;
The Importance of Wide Brim Hats
The most important part of your body to protect from the sun is your ears. 90% of the skin cancer that kills people starts on their ears. Wearing a billed cap will not protect you, only a wide brim hat will. Even if you wear a hat, make sure that you put on sun block on your face and ears, a lot of light is reflected off the water!