I always counted my time as I saw it fit, screw the rules.
If I got put in a car group with a bunch of crap people, and they took an hour-long McBreak, I counted it. Why? Because I relied on Jehovah for the strength to get through the day. Not walking out of there and screaming "this is bullshit!" was my service for that day. I encouraged those crap-ass people with my fake-ass presence. You're welcome.
If I stopped and saw a baptized person who was dealing with health issues, I counted it. Why? Because I think it was the right thing to do. If my bible studies were sick and I visited them, I was allowed to count it. But not if my fellow brother was sick? Encouragement is encouragement, right? Why does one count and the other doesn't? Bull. Count it all.
If I worked a territory far away, I counted the drive. "But brother, did you stop at a filling station and place a tract first to start your time?!?" NO. Either the drive counts or it doesn't. In my case, I left the house "for Jehovah", so it counts.
All in all, I agree with the above posters, counting time is a total farce anyway. When I did count time, my theory was this: If I was doing something I normally wouldn't do, and I was doing if 'for Jah', then I counted it.
I honestly think, if I didn't have to count my time, I would have done more. Wanting to do something and feeling charitable is a much stronger motivation then being told I HAVE to do something.