I used to have a Scout that didn't want to stay with the group. After the third time I had to go run him down when he decided to do some impromptu re-routing of himself, he said, "Why are you so worried about always knowing where I am?"

I don't know what inspired me, but I told him, "Because your parents didn't pay the extra ten bucks."

When he asked what I meant, I told him, "Well, I told all the parents that for the $15 trip fee, I'd bring you out here, let you have a good time, and bring you home. For an extra $10, I'd bring you out here and let you have a good time. Your folks didn't want to pay the extra $10."

No more problems. Sometimes, you just have to explain it in terms they understand.