I teach both the PADI Self-Reliant and the SDI Solo classes. As I teach them, they are identical...
The PADI class really has SDI material/skills as a subset, but has a bit more and/or is more restrictive.
I recommend people in the PADI class get the SDI manual.
Anybody taking my class is entitled to either card, so I make sure their paperwork is appropriate!
I do not accept SpareAir as a redundant gas source...too small for real diving. SDI allows it, PADI does not.
I advise against an H-valve...sure, it gives a redundant first stage, but not a redundant air supply. It is also kind of hard to implement for the traveling diver.
The PADI class really has SDI material/skills as a subset, but has a bit more and/or is more restrictive.
I recommend people in the PADI class get the SDI manual.
Anybody taking my class is entitled to either card, so I make sure their paperwork is appropriate!
I do not accept SpareAir as a redundant gas source...too small for real diving. SDI allows it, PADI does not.
I advise against an H-valve...sure, it gives a redundant first stage, but not a redundant air supply. It is also kind of hard to implement for the traveling diver.