Good piece on helping your instructor help you. Great points on trust and expectations. This point stuck out to me:
3. Looks can be dangerous – One of the things that I have learned from teaching with Trackman is that impact alignments are always more important than the look of a swing.
I have mixed feelings about this. Some obvious things like weight forward/extension I can self-diagnose without having to go back to my instructor, but the subtler things, that's where I trust the instructors way more than I do myself.