Whenever I play golf, I like to observe what the other players do when considering a swing. I have learned a great deal just by watching others, and last week I saw something entirely new. The guy in front of me was using this gadget, and I finally had to ask him what it was. He said it was the Yardage Pro, and that it had helped him improve his game. I bought one, and I was surprised at how well it worked.  In just one day of using it, I was able to be much more confident in my choice of clubs, and my swing.