The rules state a clear forward takeoff from backwards jumps should be downgraded. Therefore anything over 180 on take off should be considered cheated since 180 is a full turn and anything over that seems "clear" to me. So those saying there is no merit and calling out pre rotated jumps are misinformed. What's unclear to me is if the judges count the body or the blade when taking this into consideration. That is assuming they take the time to look at these jumps which they can only review at regular speed for some illogical reason. I'm not as concerned with the body myself as much as the toe pick or the last blade to leave the ice. The body can wind up and lead but the blade shouldn't turn more than 180 degrees ice.
All of this may be technically correct, but it still demonstrates the "green eyeshade" approach to judging that IJS has spawned.