Okay, this is where I tend to differ from the opinion of a lot of others regarding what should be placed in the box.
Most will tell you that it's good to have it a bit flexible, especially at the tip, it my opinion, it need to be as rigid as possible, for as long as possible, whilst it's in the box.
Fair enough if it goes a bit limp and lifeless once it's been taken out of the box, but that's only to be expected given the amount of work it's had to do while it was in the box.
I hope this helps