who hit a rotor off the lee side of a mountain
I had a friend who was extremely experienced tow-pilot (he stopped counting his tows, but it must have been over 10,000). We were discussing rotor-turbulence at Cowley - a wave-site just downwind of the front-range of the Rocky Mountains in southern Alberta.
His comment was "it's not rough until you get rolled inverted on tow!" I never had an experience like that, but came very close.