Hi Latej,
I am not opening up the arms room or radioing the FDC (Fire Direction Control) to rain down artillery.
I remember Timo Boll tilts at his waist to get his upper body and shoulders lower and to the side for leverage, it sure works for him. He isn't finishing off balance, even in his 40s.
More and more, there is a growing number of modern topspin style former Korean pros opening clubs and teaching modern two wing topspin play style and the associated technical things... many have their own youtube channels... Many elite amateur TT players did the same... so now you so some really great content and articulation on what is important for success in so many shots and rally/match situations.
This explosion of Korean youtubers has done a lot for the sport in Korea and I sometimes borrow their explanations to highlight or showcase some really needed thing to learn. Sometimes Lula likes it
The difficult thing about coaching adult players who were not trained as kids is that it may take many different ways to say something before the light gets turned on.
People can call the FDC for fire and blow me up (figuratively of course) and I wouldn't care. I am determined to get people to learn and one has to be committed and determined sometimes.