Since wake turbulence usually decends behind the aircraft that creates it, I believe that one of the methods of dealing with it is to fly slightly above the lead aircraft. I do know from talking to C5 Galaxy pilots that when they perform in-air refueling from KC-135's, the bow wave of the C5 actually pushes the tail of the KC-135 up, causing the aircraft to nose down. The KC-135 pilot has to be ready to make an immediate correction when refueling a C5. Since most of the wake turbulence comes from the wing tips, I would imagine that as long as you stay inboard or outboard of the wingtips, it is less of an issue.