Hi oldhand, From the way you speak about this athlete looks like a promising figure in the future badminton world. Aggression is a word we should not use. It will mislead the athlete to a perfect training. We should use words like offensive play, setting up offensive play and applying it at the correct time and direction. I may be able to help him if he happen to have time to visit Singapore. Well he can write to me too if he needs any direction that I can offer. Good luck