Stephen, some of these devices, by design, do not and cannot meet every requirement of the spec(s).
Kirk, I like your wisdom and spunk, your way with words and truly believe that you are a ass(sometimes ASS)et to the sport, but you just wasted more words being an ass than a simple reponse would have taken and I proved it.
You "proved" something on an internet board, and I'm the ass? Congrats.
As is often the case, the problem is way bigger than just the ISAAC issue but SCCA members are mostly a mix of the the jaded, the apathetic, and the new so they don't care, want to make the effort to care, or (mostly) know that they should care.
If you stick around long enough, you WILL get dorked by the broader problem at hand, driven by SFI's business model and the CRB's/BOD's lack of critical thinking on safety issues.
The Foundation's business model has generally been to introduce every spec in drag racing first (e.g., with suits, back in the '80s) then drag the other racing disciplines along as they penetrate the market. They invoke the same "industry standard" as is now being imposed on H&N systems, and all it takes is a handful of manufacturers who understand the value of limits to market access to get with SFI to make a spec.
Do you know, for example, that SFI has specs for drag racing wheels? Only member manufacturers can invoke it so where SFI wheels are required, the only folks allowed in the market are MEMBER MANUFACTURERS and CUSTOMERS of those manufacturers. If Spinwerks, Weld, and American (all SFI member manufacturers already) got together and wrote a spec, and the CRB/BOD got chickened into playing along, every Club Racing member would be obligated to patronize those companies as they replaced all of their wheels. All of the other manufacturers would be forced to pony up membership and "certification" $$, or opt out of the market, limiting your choices...
Oh, but WAIT. You know all that already because you are Champion of the Internet.
K