I am an ITSSAR instructor, and to be fair, I think we are all trying to do the same job. But some instructors are better than others. I always encourage all trainees to do there best and improve as they go on. the bad bits as an operator you are in charge of that machine :) a basic course is just that, so a new operator needs to improve as he or she goes along. I am sure as instructor's we all try to achieve the same result