As an R/C instructor I don't warranty against crashing!

I've been put in recovery situations where a student unexpectedly does something stupid like rolling the airplane inverted at 5 feet off the ground on takeoff. Yes, I got the airplane out! That event was after the student had been making pretty consistent landings just about ready to solo. Takeoff and landing IMO is most dangerous phase in that there is not much time for the instructor to react regardless of how vigilant he/she is in expecting the unexpected.

The another issue I have is that most people come to this hobby without the slightest idea of how an airplane flies. I give some basic ground school and try to assign some kind of homework to give the student a basic level of aerodynamics. Many students don't want to extend an effort in learning basic principles which would certainly help to increase their success in this hobby. They just want to fly, but unfortunately somewhere down the road that lack of knowledge will most likely bite them. You can only lead them to the water, not make them drink.

I find instructing rewarding with few drawbacks other than it often limits my personal flying time. Many students when they see me at the field are of the opinion that I should be flying them because I am present. I find it hard at times to say NO, not today. This is my time for flying we will fly again at our next appointment.