http://www.airliners.net/open.file/0869976/L/
The question is how does one fly in that kind of formation (keeping it solid) without "waves" propagating from the center? I mean, if the outmost wings are just flying the paint on the wingmen next to them the "wave effect" should be almost inevitable. But maybe I am just missing something

Again, IRL pilots have the seat of their pants, which is quite helpful at least in straight and level flight and coordinated turns.