Don’t get me wrong, I think technology can be great, but oftentimes it confuses students more than helping them, as their minds get flooded with swing thoughts and they can get paralysis from analysis. If you really have a good teaching pro that keeps it simple and knows swing fundamentals along with ball flight laws, he/she should be able to identify and fix most every swing issue with a student just by seeing their ball flight, swing and set up. Fancy technology should not be necessary (only a luxury) for a knowledgeable and experienced teaching pro who really does know the swing!