...In fact, in the settings of trackir, you can programme it always to run minimized. But I do it manually.
A tip on flying it- You may wonder how much to move your head to get a particular amount of movement of trackir? Don't approach it like that. Use your imagination and really think you are in a cockpit...
To elaborate a bit, because I've found the TIR software a bit more opaque than Saitek's.....
When you install the software, be sure to install the included profiles when asked. It comes with 4 profiles, called "Combat Flight", "Flight", "Racing", and "Default". These differ in how your real head motion is scaled to game motion, and whether any axis is reversed. The "Racing" one has very limited up-down movement, for example, and "Default" has all the axes reversed, so reallly blows IMHO.
I've found that "Combat Flight" works intuitively and naturally for me in OFF without any need to change it.
The trick is getting the profile you want to work in OFF. When you start the software, go to the Profiles Tab. The top part of this lists suported games and the TIR profile that's associated with them. You'll see CFS3 listed here, but not OFF, and OFF is apparently different enough from CFS3 now that TIR doesn't recognize it as CFS3. Thus, you'll end up with the sucky "Default" profile in OFF if you do nothing. To get the "Combat Flight" profile to work in OFF, you need to do to the lower part of this screen where the actual profiles are listed. Next to "Combat Flight", check the box for "Exclusive-load". This will force the "Combat Flight" profile to load in every game, including OFF.
If you have the TrackClip Pro, click on the "Combat Flight" profile in the list and hit the EDIT button. Across the top of the main screen, you'll see a box to check for the TrackClip Pro. Hit OK and that's that. But before you do, take a minute to watch the various displays that come up in edit mode to see how your real head motion corresponds to game head motion.
Then go to the Options menu at the top of the screen and click on "Run Minimized". Then minimize the software and start OFF. Now you're set. The only thing to remember from here on is to start the TIR software before you start OFF. When you start it, it will automatically load the "Combat Flight" profile and minimize itself onto your taskbar. Then start OFF and voila! You should also program a stick button for F12 (centers your view in TIR), and reassign any OFF command that uses F12 to a different key to avoid conflicts.
As to using it in OFF, I recommend doing a QC hop starting on the runway and just look around a bit before flying. It's amazing how quickly you get adjusted to it. It's all unconscious feedback from your eyes.
Say you want to look right to see your ailerons move. Before you start moving your head, your eyes automatically go to the right edge of the screen, then you start turning your head. You'll see your wingtip eventually come into view and your eyes lock onto it. Your brain's equipped to measure the angle between your eyes and your head and seeks to minimize it automatically. So what happens is your eyes track the wingtip and your head automatically stops moving when it and your eyes are pointed the same direction. When this happens, on the screen you'll see the wing sticking straight out from you as if you were really looking 90^ to the right, but you're head is only pointed about 10^ to the right in real life.
The really cool thing is the 6 degrees of freedom. You can lean over and look down somewhat past the edge of the cockpit, or lean over to see around the shoulders of your tailgunner. In some planes, you can even sit up straigher and see the entire upper surface of your top wing
.
This all feels close enough to just looking around in real life that it's quite intuitive and easy to do without having to think about it. It IS slightly different from normal life, however, so it does take a little exposure to it before you completely quit noticing the difference. But for the most part, you shouldn't have any trouble with it. Just look around like you normally would.