The mental justifications are brilliant.
If you offer a magazine to someone who completely ignores you, or if you knock on a door of a house that is obviously unoccupied, your journey to outlying territory can be counted as 'time'.
If you just drive straight out to the territory without either of these little rituals, you cannot count your time.
Even better, do one of these things before you even meet for field service, preferably near your own home. This way you can count even more time, just knocking off 10 minutes for the field service meeting.
You've probably got 45 minutes before you even reach your territory!
Do a 'call' when you're back in town and bingo! You're on target to meet the congregation average.