Solve this

For problems I've been thinking about that need better ideas. Your input is welcome.

Enforce the "step in before storing your bag" rule?

Here's an entry in my new "solve this" cateogry, which asks for reader input on solving problems.

When flying on a very full flight yesterday, we had an example of what my approach for faster airplane loading would have helped with. But until we get that, are there other solutions?

On the full flight, passengers would stand in the aisle trying to store their bags. With the compartments full they took a long time doing it, sometimes found themselves unable to. This blocked the loading and even though we started boarding 30 minutes before the flight, we were not finished by departure time. The flight attendants were on the PA every few minutes telling people not to stand in the aisle, to instead step into the row and let people pass, but very few paid attention to it. We don't seem inclined to do this, and not just because we are desperate for storage space. (I'm one of the desperate, I carry on fragiles like camera gear that I refuse to let them throw around.) We just don't believe that our own efforts will slow things much, and we also believe it will take "just a few more seconds" to get the bag in right.