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I have this system right now. Another Spyderlover (Horse171) designed it for his golf clubs, then improved on his design (lighter and I think aluminum), so wanted to sell his prototype. The picture is of his RT with golf clubs mounted.
Although I don't golf, we love to ride bicycles (roadies, for the most part), so I wanted a way to do both. I adapted his basic design, had a local welder fabricate the changes, and now can carry 2 bikes on my RT. I don't have any good pictures of it, as I've been busy, but have carried bikes comfortably on a couple of occasions. The mount slides onto the swing arm and has a rod that goes inside the hollow axle. I've ridden a little more than 100 miles with it mounted, without incident.
There was
another thread that had an RS bike carrier using the MMG hitch and a commercial hitch mount carrier, and
this link has a golf bag carrier with an enclosed bag.