Hula hoop

Your golf swing is a circle.  The clubhead moves on a circle around your body.  If you can imagine a large hulahoop around your body this will give you a visual of where the clubhead is traveling throughout your swing.  It is evident in my research that as the club moves toward the ground it is moving down and out, bottoms out, then moves in and up.  So what?  Well, if your hulahoop is aimed in the wrong direction you will have a hard time hitting a straight golf shot.  All you have to do is aim your hula hoop in the correct direction and couple that with a clubface that matches it and voila.  A straight golf shot.  Sounds easy right?