Originally Posted by Jinker

Easier than the bungee trick is to just use the cage straps themselves. I unthread them from the top of the pedal, put them around the crank arm and back through the top of the cage and cinch it down. They no longer flip around, it takes 15 seconds to do, and I don't have to carry anything extra.

I do this a few times a week when I pick up my stoker at work.