I have made every attempt to get LDM7 (and any player I can connect with) to do this very thing. I make cool sounding catch phrases to emphasize it... like SPIN WINS... Spin is your FRIEND... Spin to Win...Even at a couple levels above MY level, heavy spin is a real weapon.
I am of the inclination that one should learn how to spin real heavy and slow as a first response, then train and ingrain the fast loop properly judging when and how to use. (hit or loop kill if ball is high, otherwise, spin heavy until it is time to go fast loop learning)
I agree with you that LDM7 could use heavy spin way more than he is now... and why you rightfully emphasize this... however, it is a long process trying to get someone to do that. LDM7 was heavy spinning very little to none 3 months ago and now he is able to do it 20%+ of the time... yes, too low a number... however, HUGE improvement... and even huger considering this is just 3 months. This stuff takes a while to get there, but he is "getting there"... actually showing results sooner than would be reasonably expected at this stage considering what we had to re-do and re-shape.