Teebox,
I also place my TR4 unit on top of my monitor, pretty much the same level as the top of my head.
The clip fastens onto my headset very nicely so I don't need the hat.
Before going in game I always open the TR4 software and select the tracking tab. The 3 blue tracking dots in this screen give me a good idea how well the unit is aligned and is tracking my head movements. If the blue dots are not in a nice triangle, I just adjust my headset till all looks good.
I'm in Greenville some every week Teebox if you run into a problem. Be glad to help you.
Skyfoxx