That's better than a $1000 truck pulling a wakeboat on a 8hr one way drive thru the desert in the summer. That sounds like a ruined trip waiting to happen.
If the Toyo thing doesn't work out, try the equipment rental places as mentioned, Hertz, United, etc.
Otherwise go rent a pickup from one of the national places and DON'T CRASH IT. If you do, pay the first guy that comes by with a pickup truck $100 to haul your boat to the next exit!
I just rented a big Penske van for my move cross country and you're "not suposed to haul any flammable materials or tow anything but a Penske trailer." Had my Jeep, 2 sleds and a 4wheeler + all my gas cans and garage chemicals that the moving co won't take in the back of the box van. Had my sled trailer, loaded, hooked to the back. It pulled like a champ!