I have made 4 holes in ones. The last 3 using Titleist ProV1 golf balls. They also have happened the last 3 years. I'm proud to be a Titleist Pro V1 user. The last one was on a par 3, 150 yards, the wind was in my face gusting about 30mph. I usually us an 8 iron but used a 6 iron. We didn't see the ball go in the hole and we looked everywhere until one of my partners looked in the hole. I'm a proud user of Pro V1 golf balls.