My first downstroke thought

[Yoda]

Homer Kelley gave a tip at one of his masters classes (which I heard on tape) that I really like and I use it all the time.

He was talking about the imaginary plane of glass in which your head sticks out and the base is on the plane line. He said to keep your right palm underneath and flat to that plane of glass on the downstroke.

This tip helps me ensure my first move is down and not out and over the top. If your right palm is underneath and facing that imaginary plane of glass, then it's impossible to come over the top.

Trig,

The 'Palms to Plane' is a great idea, especially for Swingers. Just make sure your students have the correct concept for the angled plane of glass. It is a 'through the waist' Plane of Rotation and not the Hogan Five Lessons idea of 'over the shoulders'.