Humvee:
With regard to finding targets via TGP, it takes a lot of practice. But my advise would be:
1. Keep the area of interested on your right, between 60 and 120 degrees.
2. Keep a nice altitude, around 8k to 10k feet.
3. Set your autopilot to ALT
4. Start a wide clockwise circle around the target, about 5 to 7 miles radius
5. Engage autopilot and then zoom in on the TGP MFCD display.
6. Start looking.
This way I find I dont have to concentrate too much on flying. But be carefull you dont wander into any threats.