My very first flying instructor was at an RAF gliding school. He was patient, and an excellent pilot. At the age of 15 or so I was totally in awe of this elderly man (who must have been about 40!)
When I learned to fly at Meacham Field, Texas, with the now defunct Pegasus Flight School, my PPL instructor was ex-Royal Navy, Sea Kings etc, and was a geordie with a good sense of humour and scathing sarcasm when necessary! He taught me a lot, and I understand that he now works for Continental....so if you are out there Bill Davidson, THANKS
Subsequently, I have flown with many instructors, and have never had a truly bad one. I have had some indifferent ones.
One had a superb teaching technique.....he would plug a small cassette recorder into the intercom, and would record the entire lesson onto tape........Harry - you know who you are!
I am now an instructor myself, and I always try to give the student a good learning experience, regardless of the question or the technique being shown.
Blue Skies