My local Tractor Supply store has these Dorfman Pacific hats that seem like candidates for kayaking (plus quite a few other cowboy and Indiana Jones type hats):
I’m going to check our local Tractor Supply for those hats. The hat on the far left in my pic above is the Dorfman Pacific hat I found at a put-in after a flood. It was ground into the mud and hard to even recognize as a hat but after washing I’m impressed with it. The ventilation works and the one in your pic looks to have even better ventilation.
Just Google “hat, sun, hot weather” and you will find all manner of cheap boonie hats. These are military surplus or knock-offs, mimicking the original boonies. Aussies call them used to call them giggle hats. In the Canadian military, they are called “silly hats”, to rhyme with Tilley Hats (a Canadian company, after all).
I just picked up a good one, an Aussie Breezer from LL Bean. I was in there the other day for a couple other small items and they gave me a $10-off coupon, so I went back to spend it before it expired.
Crown and brim are stiff and snappy, and the chin-cord doesn’t touch my ears, plus it has a spring-loaded lock. Now my Bora-bora goes to the donation bin.