As an aside, being a golf caddy (especially in scotland) was a pretty awesome job to have as a kid, you earned more money than you should be allowed to at that age for a nice walk in the fresh air.
According to this[0] page on his website, pjhyett grew up in the Midwest. As a fellow Midwesterner, I can tell you that you do not want to be outside all day, every day during the summer carrying golf bags, because it is burning hot.
0: http://pjhyett.com/2008/07/23/i-%3C3-san-francisco.html