Actually, the funny thing is that the full scale competition acrobatic guys are paying a lot of attetion these days to what RC guys are doing
Quite right. There have been one or two manuevers added to full scale aerobatics that started with RC. Power to weight ration is probably the ONLY thing keeping them from doing more.
Dennis-
By the way, I think the other acronym you were looking for was IMAA. International Miniature Aircraft Association I think. Anyway, unlike it's name, they strictly limit to a minimum of 80" wingspan monoplanes, 60" wingspan Bipes, or 1/4 scale. (Some 1/4 scale planes are smaller than the numbers above.)
They also do not compete. They're strictly for fun meets.
Dennis-