I'd be interested in hearing what sort of in-water self-rescue exercises are applied to either the SDI solo course or this new PADI self-sufficiency course ...
It may be somewhat egotistical of me to assume that PADI have used my distinctive course as a basis for the one they are releasing, but mine was (I beleive) the first ever self-reliance course approved by PADI, so......
My (PADI) course is very scripted and really has no simulated failures or self-rescue exercises. There are four dives, three of which are skills dives and one is a dive planning/execution exercise.
The type of skills covered are trim, buoyancy, mask swaps (maintaining depth +/- a tolerance), use of a pony bottle, SMB deployment and an OOG ascent that combines various of these. It's really "Fundies Lite" and not a solo diver course at all - more about developing the foundations needed to start thinking about solo diving (or self reliance). I also did a lot of buddy skills in the pool - for example getting people to do OOG drills when they have to swim to their buddy. I'd repeat this many times, making the distance a bit greater each time. Then introduce the pony bottle and start asking people to make choices - so I swim to my buddy or do I switch?
Like I say, I have no idea whether PADI have ripped off my course or whether they've just been inspired by me or other people. I'm awaiting a response from Drew on that one.
I started introducing more dynamic failures in to the course, which is the point where I realised that I was going to start breaking the standards that I wrote..... which I think is seriously not cool! My SDI course is more like GUE Tech 1 (with no team skills, obviously) and consists of simulating progressively more challenging failure situations and again put students into situations where they have to make choices. The debrief is then about talking through those choices.
An example situation is having multiple failures - loss of back gas and then a free flowing reg on a pony bottle. Feathering the valve on the pony is a fairly complex ascent - the decision the students have to make is to they deploy an SMB or not? In the dive plan we agree that an SMB should be deployed - so does the student follow the plan (blindly?) or make a decision to simplify their ascent based on the priority of failures.
Unfortunately, I suspect that I am in the minority of SDI instructors who do much more than the bare minimums for the course - where are somewhat less challenging than my PADI course.