Hi Pamela,
I was in exactly the same situation 2 weeks ago. Except I got my boat from Sydney.
Car transports companies said as it couldn’t be driven on the truck – no go. Freight companies said its not in a box – no go. Boat transport companies said too small – no go. Rental cars in Oz dont have tow bars as i thought about flying down, hiring a car and towing it back. Then i thought about a flat bed truck, but couldnt find a company that does one-way rentals. I did find one company happy to bring it up, but the quote was for $1240, half the cost of the boat I bought! I exhausted every avenue I could think of.
Anyway, I talked a mate in driving with me to Sydney to pick it up. One day down, one day back. Melbourne would be 2 down and 2 back I would imagine. I’m very interested in hearing how you get the boat north. if ever an opportunity existed to start a business then this is it.
Let us know how you go and good luck.