Scott,
Lowell, of course, is a great resource, the best! He would also be able to get you a list of Instructors that have hard boots. If you're looking for examples of great teaching, Lowell & the Vail Empire excellent places to look. They have one of the premier snowsports programs in the U.S.
If your focus is on teaching styles don't limit yourself to hardboot only, they have fantastic instructors/coaches/supervisors that have never been near Plates, but could share a wealth of info on maximizing your potential, getting to your goals.
If your compiling a tips list, very cool! There is no single magic pill that works for everyone. The best instructor/coaches work together with their students to set attainable goals depending on motivation, skills, conditions, equipment, etc.
BTW your site rocks! The new features are terrific. If you ever travel through the flatlands of Ohio, western NY/PA, let me know, I'd like to ride with you.
Mario