When I'm on my cat, I gotta wear a hat. I gotta wear that hat when on that cat. While sailing that cat, I wear that hat. If not for that hat, there'd be no sailing that cat.

If you don't understand what I'm talking about, you must still have a full head of hair.

The problem is: What is the best hat to wear for cat sailing?
I usually just wear a farmer hat, also known as a seed hat. They are usually free, but commonly fly off in a gust of wind. It's good practice for a "man overboard", but I don't need that much rescue training. I could wear my old Roy Rogers hat with a string, but that would look silly. What do you think makes a good "cat hat" ?