After my NAUI basic O/W, and many years of diving, I decided to try out the best of all the others. So I took the SSI AOW and Rescue Diver courses (although PADI has a great rescue diver course as well), and the PADI Divemaster course. An opportunity to join a NAUI ITC and return to my NAUI roots appeared, and I took it. The NAUI Master Diver manual is the technical course book for the NAUI ITC at our store, although other topics such as leadership and teaching are a part of the ITC as well.
I found the NAUI Master Diver manual to be on a reasonable par with the PADI D/M materials, particularly the PADI Encyclopoedia of Recreational Diving.
As a NAUI instructor, I teach by NAUI's standards and methods. Sometimes I will fold-in some PADI things that NAUI does not have, such as PADI's 5-point descent procedures. There are many things that both agencies have that are similar, only named differently, such as NAUI's ABCD pre-dive buddy check, and PADI's BWRAF (begin with review and friend); or NAUI's SEABAG predive briefing vs PADI's 15-point predive briefing.
PADI's strongest courses are their basic rescue course and their divemaster course, in my opinion, based on my observations as a PADI D/M. These are as good as SSI's or NAUI's if not even a little more comprehensively taught.
However PADI's Master Diver course leaves a lot to be desired, when compared to either NAUI or SSI. In particular, the PADI Master Diver course is no more than an additional AOW segment in the PADI format of mostly just going on more dives with an instructor and divemasters.
>>I would be curious to know how the NAUI format is so different from PADI? The PADI courses follow text, require chapter quizzes, require viewing a video, require a final exam (in some but not all cases), and require demonstrated proficiency in the water. (There are some posts above that claim you can reach MSD without actual dives. This is contrary to my experience as of my Oct 2003 MSD application process.) How does the NAUI format differ? Perhaps this is a question for another thread but I am curious based on your comment about the PADI format above.
I do not know why PADI offers a Master Diver course in its current format. Its divers would be better off in a PADI D/M course, or else to be at least required to master their Encyclopoedia of Recreational Diving. That is probably the main difference between PADI and the two other agencies.
>>This is just absolute nonsense....in New England...it is a fact that most DM's do most of their dives in less than 30' of water from a shore dive as part of the DM program. (If they go out and conduct decompression dives on a wreck for pleasure that is another matter). In the course of their DM program, they go to the same local boring shallow novice dive sites. The diving exposure available to a MSD is 100 times more advanced than this. There may be DM's doing these dives with a MSDT instructing a MSD student but the demand is so much higher for OW that they spend most of their time diving with students/instructor at that novice level. This again is why DM's choose this path because they love to teach and want to become instructors, not because they think they will be learning advanced techniques at advanced dive sites.
I cannot speak for YMCA. I have friends who dive and teach for YMCA, but I know little or nothing personally about their programs.
Overall I must agree with Perpet's observations of the PADI Master Diver course. Just a lot more worthless plastic cards. Matt, you are probably more than ready to join a PADI D/M class now, however, and that is where you will really start to learn a lot about scuba diving.