Teaching students to fly a VASIS approach purely because one day he will be a real airline pilot? What utter rubbish. A Warrior or Cessna with full flap down needs damn near cruise power to hold a three degree path in a strong wind.. .In any case he or she will learn how to fly the slope in a simulator long before flying the real aircraft.. .And what happens when he has to glide in on a forced landing with full flap which means almost a 10 degree glide angle over trees. If he has been brought up on a diet of VASIS approaches he will likely clobber the trees.. .. .Solo stalling and solo spinning? No big deal. We did it in Tigers with only 12 hours in log books and in Mustangs with 212 hours in log books which is about same hours that most grade 3's have got on completion of the instructors course.