The only reason for the whole turndown/lookback thing is 'cause a turndown air is very diffrent to a lookback air.
Lets say you ride GOOFY and air to the LEFT. If you were to do a turndown that would be a TURNDOWN AIR.
If you were GOOFY and air to the RIGHT and did a turndown that would be a LOOKBACK air.
So to sum up. If your goofy, and spinning left on anything, its a turndown. If your spinning right its a lookback, if your regular its just the opposite.
I hope to neveer see this question agian.