The plane will do the same thing every time. How many take off have you made and used the same amount of rudder. If you didn't use the rudder the plane would go in the same direction almost every time. All I'm saying is if the man is having a tough time learning to use the rudder
there are ways to do it without the rudder input by using the full runway. Most of the crashes with beginners using taildraggers is because they keep the rudder input on after they take off and fly into the ground and don't realize until after the fact that the rudder is pushed all the way over. I've been flying for 28 years and have instructed a lot of pilots. And yes I agree with you the plane must be under control of the pilot at all times. If you know that when you give throttle the plane is going to go to the right and you add a little elevator it will take off I would say it is under control.