i wish i could say i read every post of this thread but i didn't so take that into consideration pls......
my personal opinion on what i have read in this thread (and others) is that i believe some people put too much weight on the point that a SM instr must be a highly advanced, experienced, and expert SM diver in order to offer a successful class to someone new to this configuration. i am sorry but i just do not not agree with this.
there seems to be an idea in the SM community that unless you are a fully cert cave diver with 1000+ dives (i exaggerate just to make the point) you simply cannot possibly teach a decent entry level SM class.
some posters have said, and i agree, that it may all depend on the students expectations. if you are a student who is interested in trying SM and learning "the basics" to see if you are interested in possibly changing your typical single BM rig to a double SM rig, are not a "technically" trained diver, and only dive open water environments within the standard open water depth/time limits, then why does that class have to be the class to end all classes ?
when the average OW cert diver takes a rec wreck diver course, rec deep diver course, nav course or whatever specialty you choose as an example, they cannot possibly expect to be an "expert" in any of those areas after taking a two day class. why would a rec OW SM course be any different ?
i am a newly cert OW instr and of course consider myself a rookie. there are 100's if not 1000's of instr's that are far more experienced than myself and far more skilled in various aspects of diving. but i think i still have a lot to offer a new student who is taking their first entry level OW class. why would teaching SM be any different ?
i started messing around with SM awhile back and hope to one day be able to instruct SM classes. i would never intend my class to be the one and final class a student would need to learn everything there is to know about diving this config. and i would make it clear to any students that the course is a starting point, just as in their first OW classes. if they want to pursue their training further so they can do more advanced dives (deeper, overhead etc) then they would need to seek a more advanced instructor who can meet those needs.
the way i see it, if someone can be cert to teach new divers to dive with as little as 75 dives in the single BM config, then learning to "introduce" OW divers to SM should be acceptable with even less dives than that in the SM config.
as was already stated by someone here, these courses are to get the diver started in the right direction. they need to put in the time on their own and slowly work on their abilities within their training limits to become more proficient. no different than their first OW class. it should be the beginning of their training, not the end.
This is a great springboard to make the points that:
1) even being a s/m cave diver doesn't necessarily mean you can teach s/m better than a non caver instructor. Is it an advantage - yes- especially for tec sidemount- but that doesn't mean someone who does 0 overhead environments could not be an amazing s/m rec instructor.
2) all training depends on student follow up and personal practice to attain mastery. Instructors only simplify/flatten out the learning curve a bit.
3) training needs for different circumstances may mean taking different courses. There is no one size fits all scuba training method or system. Foundational courses are required to educate the diver in the basics of the sport and "advanced" courses simply take the learning process under different conditions than the basic courses and expand them.