If you bought a Class A there are several lifts made for hauling a motorcycle.
If you decide on a Class C a small trailer is going to be your best bet. Just add a locking hitch pin if your are worried about someone taking your trailer. Hauling it off the back end is NOT an option with a Class C.
**>> Really what you should be looking at is a
Toy Hauler motor home.
That way your bike will be safely tucked 'inside' your RV.
Many of my friends up North that come down to Florida for bike week all have Toy Haulers.
I looked at toy haulers for months and the nicest ones I found in both Class A and Class B was the Outlaw Toy Hauler.
https://thormotorcoach.com/outlaw/