RenoRick: are programmed and randomized.
Que?
Anyway, I have played a lot shorter time and find that, when I am using a club with decent accuracy rating, the most random part of my game is me. Anything from making mistakes in observation, estimating distance and direction, errors in picking club, shot type, and mis-dings to just plain old "WTH was that?" shots. I won't even get into the interruptions by wife, kids, dog, etc., just as I pull the club back and release!
BTW - I have only spent $5 here. When I started playing, there was an offer to "buy 500 credits and get 500 free" - so I did that. Since then - nada. One can play for free if they want to.