I've been back for a year and a half and i'm not aware of any ranking system.
As far as i know, Davie Scott, Ross Yule and Owen who formerly made up
the S.A.F. have ran competitions in my 15 year absence, so if any of them
have tried to set up some sort of system, they'd be the ones to ask.
In my opinion though, since the sport has not yet developed a large enough
following or managed to retain it's former champions and so on in Scotland.
I DOUBT IT.