You get to play golf on some of the world's premier courses, insult Phil Mickelson, and take a cut of Woods' winnings—all for carrying his clubs!
Seriously, it might look like this guy might have some input into the clubs and shots that Tiger uses/takes, but in the end, the conversations probably go something like this:
Caddy: "Yeah, I think an eight-iron would be best here"
Tiger: "An eight? I was thinking seven, and I'd chip it in for eagle?"
Caddy: "Hmm, seven might work, but I really, really, really think an eight is best here"
Tiger: "Hmm, you might be right...but I'm Tiger F*cking Woods. Give me my seven-iron."
And after Tiger does chip in his eagle, you still get a cut of the money. Wow.