I should have learned after my first ace but I didn't. Always use a new ball on {Par 3s in case you get lucky. I was using a badly scuffed up Pro V1x when I got my second hole in one on Feb 12, 2012. It was Arizona State's 100th anniversary and Valentines day. Playing Palm Valley Golf Course Lakes course when, on hole the 145 yard #4, using a six iron the ball bounced once and went in the cup. I thought it had rolled of the back of the green, but couldn't find it so i looked in the cup and there it was.