This sort of thing has always worried me, I mean we , well me anyway, really am mad enough trying to figure out and watch that blessed rotor blade go past when its only hooked onto above my head.
Another one out me backside would really confuse me, and those poor buggers that have two side by side, mate they would have to go real crazy real quick I reckon keepin' an eye on them.
But then again there's one bloke on here that flies one with the second one out the backside, he seems normal, drinks etc swears every now and then, gives women heaps of cheek.