"That could work," Ron nodded. "Either one. Or . . . depending on how far along the polyjuice is coming, I could risk picking up another set. One just for ourselves. Use the ones we've got now to play along with Crouch's farce for a bit, or set a false trail somehow? Maybe an extra, let Hermione have a crack at it and see if she can figure out how the damn things actually work. Might be useful, knowing that."