When we first started RVing about a dozen years ago, we bought an Overbilt Lift http://www.overbiltlifts.com/
The one I got then was a hand crank. It worked well enough and I was lifting a '99 H-D FXSTS. I was able to hook a tow dolly to the lift to pull our Chrysler Sebring. I had the unit shipped to a local hitch & trailer dealer who installed it for me.
The receiver was bolted and welded to the frame and actually has three 2" receiver slots. The two on the outside are for the lift so it does not twist. The center one can be used as a regular receiver when the lift is not attached. The lift itself has a two inch receiver in the center to attach a car tow bar, a tow dolly or a trailer.
The lift can be installed and removed in a matter of minutes. I did it myself a few times, but it's easier with two people. Hitch pins hold it in place.
We had it mounted on a 29' Hurricane front engine gas V-10. The extra weight on the tail made the steering a bit squirrely. I had an extra leaf spring added to each side and it seemed to fix the problem.
In '03 we bought this 41' Friendship. I needed to do a shakedown cruise on the new motor home, so took the rig to the Overbilt shop in New York, where they installed a new receiver. When I got home, I slid the lift into the receiver and it all worked as it did on the old rig. The heavier rig with air ride handled the lift with a heavier bike, an '03 FLSTS, with no sway or steering problems. My only problem was the lift interfered with the engine compartment door. I had to lower the lift to open the door. Not that big of a deal. I later retrofit a winch to raise the lift electrically.
If you get one DO NOT cover the bike. The wind will move the cover and mar the paint and chrome. You'll just have to wash it when you get there. Just like if you rode it there.
There are now several lift manufacturers out there with options that were not available when I bought mine. Just Google RV Motorcycle Lifts for a list.
Now my wife has her own Harley, so we went with an enclosed trailer. Biggest benefit is everything arrives clean and dry.
I know this was long, but I hope it helps.