Boys are on a hike today. If son #1 completes a few more things, he will earn First Class before summer camp (#3, he's 13). Son #2 completed the Swimming merit badge. We are encouraging them to log for Personal Fitness over summer vacation.
I don't think many parents realize that we take gym 4-5 days a week usually, depending on where you go to school. Your son could easily track their activties from school, especially the warms ups that they should be doing daily during gym.
The Scouts in my son's troop don't have difficulty doing fitness activities, they have difficulty tracking their fitness activities. I don't know why. Is the tracking too much like school?