worst thing I ever bought was a driving range card with $60 on it. All I did was go down and hit away buckets of my good shots. All gone now....
I have to wait until 80 good shots saved up again before I can play.


Seriously best aids are pulled club shafts. Use one for alignment. Put it behind you to keep you from going inside or outside. Put it at the ball to stare at and check your head movement (and it marks where your divot should start!!)