Genesis once bubbled...
Yeah, and how do they police this once you have the card? They don't and can't.
So what's the point, exactly? If you HAVE doubles, why not USE doubles?
Sounds like perhaps I won't be doing the class any time soon.... I ain't gonna buy valves just for this reason - I already own doubles, and I sure as heck ain't diving a single with a regular valve in an overhead.
Find an Instructor, show him you have experience in doubles, take the class and quit yer *****ing already
Ben