I understand that in the Stearman Kaydet trainers, the instructor sat in the front seat and the student in the back seat. A gosport permitted the instructor to speak to the trainee, but the trainee communicated with the instructor in the front seat by gestures. (1) Was there a mirror permitting the trainer to see the student's gestures? (2) Was the trainee's seat higher than the instructor's seat to permit the trainee to see over the trainer's head while flying the plane? (3) Would it be fair to say that trainees rarely gestured in flight or that gestures in flight were discouraged?