Good practice but it could perfect the wrong swing.
June 19, 2012
I believe the hinged iron can help you perfect a good swing and is good for practicing that swing. However, it can also allow you to develop a poor swing. I can swing the club quite well without breaking the hinge but I still can slice the ball on the driving range. It appears that if you control the clubhead, you can vary the swing plane without the hinge breaking. Thus you could end up developing an outside in or inside out swing.
Pros:It will help perfect a good swing
Cons:It can also allow you to perfect an improper swing.