How does Kino wear his hat and what does that signify?

From the text:

Kino put on his large straw hat and felt it with his hand to see that it was properly placed, not on the back or side of his head, like a rash, unmarried, irresponsible man, and not flat as an elder would wear it, but tilted a little forward to show aggressiveness and seriousness and vigor. There is a great deal to be seen in the tilt of a hat on a man.