Carpet tube from the carpet store is free, and strong for shipping bows, also if you go to a fishing or sporting goods store, and see if they have any tubes that they ship their fishing rods in.
I have shipped a couple of bows (4) this last month, and I used tubes and bubble wrap. I am fortunate though, so far, I have been able to get tubes from my work, but I don't plan on being there that much longer. But I can still going there and ask for the tubes. They are a better option.
And I never, I don't care what the bow is worth, I pay the extra five dollars three dollars, whatever it is for the insurance on the bow, or the item I'm shipping.
That's too bad that they had to do that, even though there was not insurance on it, they should be responsible for the cost of that item, but in today's society you have to prove who did it, and that would be a never-ending battle. I would talk to the postmaster, and file a heavy strong complaint. There's no reason for that.
There is no such thing as accepting responsibility for package without obligation. The post office should be responsible, insurance are no insurance. It was shipped through them, UPS didn't do the damage, no-brainer.
But in today's society, if you don't get caught, you're not responsible is the attitude of today.
Pastor Carl.