How would you set up TrackIR for this? I'm imagining looking at the left monitor = looking at 6 view on left side vice versia for the right monitor. I'm just going to assume that it would be a bit different to set up TrackIR for this over the normal 1 monitor setup?
Actually, it wouldn't be as much as difference as one would first imagine, Yenny. First, using 3 monitors means you'll change your FOV setting in Aces High to anywhere from 130 to 145, depending on preference. That means you will, at all times, see that wide a swath of in-game real estate, regardless of whether your are looking forward, to the sides (over your wings) or to the rear view. Given that larger FOV, you don't really need to move your head further than you would if you just used one monitor (which is typically set for about 90 dgs FOV). The wider FOV takes care of part of the problem right there.
So you would adjust your head-tracking settings to show your (using the clock-face metaphor) 5/6 or your 7/6 views at roughly the edges of your main monitor (or even less). Setting them beyond that, to display those views on a
side monitor, is unnecessary and frankly, counter-productive. That's because setting your 5/6 or 7/6 views (let's call it "over the shoulder view") at roughly the edges of your monitor will
naturally allow the side monitors to display your full 6 view without requiring more head movement beyond the main monitor edges (remember... FOV).
Bear in mind that you also need to set up your TIR or FreeTrack profile for most efficiency. Sometimes it takes a while to dial in the correct curves for smooth and natural tracking like that (it did for me anyway), but it's well worth it.
FWIW,