I regularly took ferrys to the San Juans Islands next door. It didn't cost much. Why not rent a tow dolly (about $50 in ATL) and pickup if necessary, and take it away on the ferry?
Be sure to let uhaul know you are towing something less than 1/3rd of the weight of the truck. They have no idea what you will be towing and won't rent it to you if they think it will be too heavy.
"I want to ride my tricycle. I want to ride my trike."
"I want to ride my tricycle. I want to ride it where I like."https://www.youtube.com/watch?v=Om3C1Ep ... D3E18BB447