However PPL students like to fly in relation to the ground that they are about to hit in the circuit and as such they like flying on the QFE.
For example it you climb 20ft up a ladder it is 20ft up, not 120ft above sea level. To a PPL stude it makes more sense in the circuit.
As they progress in training the QNH should be brought in, in stages.
I have always believed that the first method is better, that is my opinion though.
Students do find it strange to be sitting on the runway and the alt reading 120ft.
Keep it simple!
I would however like to read more about infringements in the verticle. I would suggest that most infringements are people flying horizontally into controlled airspace. After all most PPL pilots are flying between 1500 and 2500 feet.
Any higher and they get scared.
If anybody has a link to infringments I would be very grateful.