I encourage students who don't want to "work" in diving to go for a Master Diver certification. But we teach the SDI Master Diver a bit differently than most. I run that the same as DiveMaster except we don't cover the "business of diving" stuff or a lot of the leadership stuff. Advanced lessons on physics, physiology, various full specialties, etc. These are often co-mingled with DM and instructor students as we teach the same materials. These students become true "master divers".