Nick Faldo won with his girlfriend caddying for him. I think a good golf coach can really help a player improve, but most caddies are simply guys who wanted to play but cant, so they carry the water for the real players. Also, not a bad gig for those who hook up with a big money maker.
May be it is very soothing to have your girl friend to caddy? LOL..But not many women have the strength to carry those pro-bags for 18 holes.