I once had a PPL student who came to me from another school - he'd done about 30 hours - and he had quite clearly been taught only to steer with rudder after the final turn. Needless to say he was struggling to keep lined up, allow for crosswind drift and fly the approach in a way that gave me any confidence that he really saw how it worked. It took a long time to re-train him.
To my discredit I never asked his original instructor if he taught everybody that way. I should have done.
Hermie - I'm sorry, but what you are being taught is wrong. Has your instructor explained WHY he thinks you should only use rudder for the approach?