Thanks InTgreen
From your answer I take it that those QHIs who aren't required to teach a particular exercise (say those on 660 and low flying) never practice it, or practice teaching it? And is that just the FBH personnel, or the serving QHIs too? (Shameful if true for them - CFS should take a view anyway).
So I guess the hours you rfer to would be a "one-off" to make the change to mirror-image work?