It seems unrealistic to make people figure out how many hours a day they spend doing each of the listed categories of activity. I imagine most people would end up making some pretty inaccurate guesses in that regard. To do this accurately would require keeping an activity journal, something most people would not do.
As far as I'm concerned, one of the most effective tools I've seen (and use daily) is
The Google 15. It keeps a 15 day moving average of your weight so you can easily see your overall weight trend.