Keep it simple.

"Lift
Flick
Flick
Drop"


The basic overhead cast. Say it while he performs the above in time with your audible que. Long slow lift, an upward flick, pause, a forward flick, then follow through. ice and gentle, nice and smooth.

Pantomime will also help greatly and provides him a 'muscle memory' building excercise he can pull out anywhere.

You can use as much wrist as you want, as long as your rod tip tracks SLP

Chris