Thanks for sharing! The great thing about an aviation forum like APC is the variety of sincere input you can gather from students and established flight instructors on everything you can imagine. It's a great way to explore your own ideas, and be stimulated by counterpoint from other pilots. The FAA system of passing through a nearly mandatory instructor period can serve as a door to a lifetime of aeronautical study of the subject. I obtained my initial instructor certificate in 2008 and have been teaching ever since.