Honestly I don't believe there are any, I'm sorry to say. Not to be a DD. But you could buy another board and put 2 in a box.
Give Dolly a call and see what she can work out for you. Dolly Mancarella - ダリ 万彼等 Cell: 619-818-5660
I contacted her last week and the least expensive way was $195 and that was via truck. Best of luck with getting the board to the right coast. You may want to ask if JP has any coming this way where you could hitch a ride.
I have a 9 ftr out there with fin box I need to get west and will split a box with you. It is in El Segundo. Trying to figure out a way to get out there and pick it up, but don't have any free time in the near future.
What about Amtrak? It used to get mentioned a lot on here. I only used it once to help send 2 boards to fishy82 (Phila-Jax). Relatively inexpensive and boards arrived intact and got there the next day. I think it was $65 per board. I packed them carefully in a soft board bag.