The majority of professional golfers do not employ game improvement irons. They discover that they do not require the increased forgiveness and distance, and the club's overall appearance is a little too large and hefty. There are some exceptions to this rule. KJ Choi used to utilize a Ping set of irons as a game improvement club a few years back. He liked the way they felt and played with them, and they are clearly a legal option on tour. The majority of tour players will utilize a blade.