Timely subject. I have a 30 ft gas class A and will be putting a motorcycle lift/carrier on it in about a month. But I have been doing a lot of research. I would recommend that you look at several and find what you want. I looked at Overbuilt, Hydralift, cruiserlift, and Versa lift. Several have special adapters for carrying golf carts and ATV's. Cruiser Lift has a nice form to fill out to see if your motor home is able to handle the load. There seems to be quite a few who do carry their carts so should be doable.
As for me, I will carry a scooter or motorcycle weighing between 350 lbs and 650 lbs.
Ride Safe
