cargo carriers

What is the weight rating for your bumper? How much weight do you plan to carry? How much does the carrier weigh?

Off the top of my head I think you need to watch the extra load on the hitch assembly, don't overload, the OEM mounting bolts . I believe their is a rating involved.
I'm not too sure about using the bumper which is really a tube to carry the sewer hose. I know it's a lot more beefy than most TT bumper/hose carriers but IMO, its a weak part of the setup. Mine is supported to the frame but its a thin tube sitting on brackets. I would not use it .

I had my bumper replaced with a custom made carrier. Before that I had a rack in the hitch for about 18 years with no problems--it held a Kipor Ti3000 generator.

I have for years used a cargo carrier on my class IV hitch used to tow 4500 lb travel trailer with no problems. Carrier is rated for 500lbs from HF but I never go that high as there is no need. The class IV husky hitch was installed with bolts years ago by a welding shop. Used same hitch on my Ram 2500 V10 and another Ram 1500 with good service (3 separate hitches).