Check with the Vegas boat dealers. I shipped a boat from Seattle to Minneapolis a couple of years ago. Had it winterized, shrink-wrapped( definitley do this- it is not an option if you care for your boat) and put on a flatbed- trailer and all- and shipped. I think it cost a couple grand.
Uship.com You put up what you want shipped from where to where and truckers and haulers bid on it like Ebay. You will most likely get a guy with a pickup to pull it for the cheapest. Make sure they have positive feedback. And you get free quotes.
I second what Will said. Check with your local dealer, and see if you can get it "back hauled" when they get a boat delivery. Since most inboards are built in TN and FL, you should be able to get it back hauled without too long of a wait. Just a thought...