What is the criteria for discerning autorotation in IMAC? What tells you that there was no autorotation?

The reason I ask is becuase in pattern the "speed" of the rotation is not a judging critera although the AMA calls it "rapid autorotation". I just want to be able to differentiate. The criteria in pattern are a visible pitch break and simultaneous rapid autorotation. This is apparent after the break when you see both the nose and tail coning around the cg. If there is no visible coning, its a zero. If there is no nose break it is a severe downgrade in pattern.

For IMAC, I know there is a rulebook I can read (and have some), I am just curious what you guys out there judging are looking for and basing your scoring decisions on.