I have not trailer my Corvette, but my brother had a trailer he used to transfer cars with. His trailer had the rear door that dropped to act as the ramp. It also had a living space at the front of the trailer which had its own generator and all of the living conveniences of a modern RV. I don't remember the exact length, but he had enough room in it to carry two vehicles when loaded. The trailer had side doors that helped when he was loading/unloading the vehicles.
He pulled it with a Ford Dually Power Stroke set up as a fifth wheel tow package with an extra diesel tank behind the cab that held 200 gallons.
He is no longer in that business and sold all of that.