Seattle Pioneer, You made a good point in your post. I like that the scout that is on time is the Denner. Just starting as a leader this year I have rotated the scouts every couple of weeks (10 scouts) To get used to being in a leadership role. I have yet to have all 10 scouts at a den/pack meeting anyways, so it works out that they rotate. I think next year we will concetrate on doing the Denner and an Assistant together, so that they can take a more active role than they did this year for proper leadership training.
I am researching information how to go about it properly, so they will be better prepared.