Rocky:
I could very easily fabricate a hitch platform for the Rocket or any other bike for that matter and then build it here in my shop but there is a consuming problem and that is the inherent liability. Hitches, especially when used against the wishes of the OEM garner an acute liability problem not only with personal injury but with mechanical injury.
The last paragraph in my instructions for the FlipMeister Stainless Brake Line Clamps isn't there because I wanted to take up space on the page and dazzle everyone with my legal expertise, it's there to protect me from the liability dragon.
That's the very reason why so much of the 'bling' we buy seems overpriced. It's the aftermarket manufacturer hedging himself against the possibility of a debilitating lawsuit.
Some items have a lower liability level and some higher. Hitches, performance enhancements, handlebars and exhaust systems are at the high end of the liability scale, an area I have no desire whatsoever to explore.