I utilize both a Wells Cargo and also a TPD 8X20 enclosed for the 69 Camaro. No problems at all. A winch is the normal way to load and unload the car. You really don't want to drive the car on, as it is very destructive to the clutch on any car.
I have found the width difference between an 8 and 8 1/2 footer to be very detectable with the tow rig in regards to aerodynamics. Something to consider.