As an instructor, I've always felt that presenting a solid model for the students to follow was part of the job. A big part of that is modeling trim, buoyancy control and efficient finning technique. This video was shot a few years ago during the third pool session and I use it as a demo of the skills that will be introduced to new students. The instructor is wearing rental gear, just like the students. Did your instructor model proper trim and buoyancy control during your course? Do you think it's important that they do?