I am not trying to be bossy, I just like talking about this stuff, hope it comes across that way! I agree with you Mike that some people get the idea we are just trying to be cheap or avoid buying new gear or learning new techniques. I wish I could post a pic of all my gear. It looks like a shrine to Nemrod, god of the sea! Old and new and I am buying more, cannot have to much! Nope, not saving money here.
To me Vintage Diving is diving with gear sold, used or built more or less pre 1975 using the techniques, training and styles that would have been taught and were common during that era. For example, several rather normal looking single hose regs are vintage and in my opinion so are certain types of manual and power inflated BC units but the Scuba Pro Stab Jacket which I think came out in the early 70s is not vintage. It is not vintage because it does not fit the style, methods or training, techniques of that earlier Sea Hunt era, it belongs to the Post Vintage era of diving. I also think certain types of spg units are vintage and if one can not find a real vintage spg then some of the modern brass units ought to be acceptable. Looking through some pre 1970 dive magazines I have here I see several articals about the "new" spgs. There is another argument for using a surface flotation vest--Mae West. There is nothing in the magazines about any BCs. Oh, look, here is an adv for a life vest, CO2 inflate, Rubber Fabricators Inc, 22.95 dollars!! Nope, nada, except in the very last of my 1970 year issues. I don't know for sure when the SP Jet Fin came out but it is not in my opinion vintage--I could be wrong. If it has flaps, vents, jets, springs etc it is probably not of vintage style or methods or training. Consoles, computers, digital anything are not vintage but I see several articals on the analog/mechanical ScubaPro "automatic decompression meter". Now, understand, I am no expert and I know these are just my own opinions and others may differ and that is OK. I also understand that many people may dive a vintage double hose reg with a modern computer hooked up to it and that is GREAT and they do it because they love using that piece of gear etc but it is not vintage diving, it is just diving using a piece of vintage gear. I guess what I am saying is that using vintage gear does not mean to imply vintage diving in and of itself.
I belong to a vintage motocross club. These guys get into fights over the color of sprokets, you can split hairs and ruin the fun of anything and if it ain't fun it probably not worth doing. I guess if they ever start having vintage diving competitions then there will likely be fights over whether someones swimsuit is authentic vintage and if neon pink in a wet suit is period authentic! Until then though I think your vintage if you honor the "spirit" of that era. N