JeffG:DIR-f is not DIR.
DIR-f is a class that goes over fundamental skills and introduces some DIR concepts.
It is a good class, but the fact of taking it doesn't make them DIR.
Certainly not, not saying that it is. But for many it is the first "class" exposure to the DIR system, atleast it or the equiv that fifthd-x teaches. So I guess my answer is the same whether we are talking about the DIR-F class or DIR, I still think there is some value to most rec divers.