Trainers and trainors
This subject just never seems to die, some beginner thinks he is above starting with a trainer aircraft, Then doesn't realize that he is taking time from his instructor and in many cases those others using the airfield. A good trainer and instructor can speed up the process, period. Pick a more advanced aircraft that doesn't work and you will be starting all over with one that will work, the high/flat bottomed wing trainer. Some get away with the shortcuts and others do not.(most)