Brian, LOL I was cleaning up my class handout this morning and I guess I kinda forgot which window I was typin in
Going back a ways I used to think all the switch casting I was doing was messing up my single spey. It's true that the switch puts a lot of muscle memory to cast right back in the same direction, which doesn't help you change direction. But once you figure out how to do the change of direction correctly, that ol' switch cast is the main attraction once again so it's all good.
Rob - I know what you're saying but this question was about teaching not fishing. Guiding is both, the way I see it.
Brian - I am not currently at the office, but will get back to you shortly by phone when I get there.