Here's my tips for AHFV (Film Viewer). You can see my videos from the link in my sig to see how these tips pan out;
1: Turn on trails in AHFV - make a note of your start time.
2: Run your clip and pause at the end.
3: Set your camera start point co-ords. Ideally this will be an angle which allows for the least possible 'swing' in the camera - more or less the same general direction faced as the end point.
4: Set your camera end point co-ords. This should be a position that encompasses as much of the plane trails as possible.
5: Add the start time and adjust duration.
6: Run the clip and take a look.
7: First adjustments should be to Start Time and Duration, you can change the feel of a clip just by adding an extra half a second here or there.
For a 'free' camera feel, use 'fixed' viewing mode and 'world relative' camera type - Camera moves relative to the world.
For a camera shot that is fixed in the world but also fixed on the AHFV target, use 'world pointing'