As a contestant, I often end up judging lower classes. Last week I gave some zeroes to an advanced guy that snapped with the rudder in the wrong direction and agreed with the other judge that it was not a snap --> no autorotation... everything else was there but no autorotation. In fact the plane rolled at a slower pace than if no rudder was applied at all.

I was discussing of this with a full scale flyer that used to fly IAC competition and he told me I should not have zeroed those snaps. He said that we should look for some sort of cone shaped movement of the tail and that it should have been the case even if the rudder was not properly used.

Is he right ?