I have not personally had the need to use this website, but it has been recommended to me a number of times if you need someone to move a vehicle/boat/rv/motorcycle for you.
Basically you list your job and you receive bids from multiple companies and/or individuals for the job.
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You may be able to rent a vehicle to tow with, but my experience is that this can be somewhat challenging, since you can't really specify a vehicle with a receiver. Then there is the whole issue of temporarily installing a break controller....
Best of luck!