Hauling Drums

Hi all. I am really happy with my new comp trailer, but the porch pass throughs are too close to the back of the trailer (short trailer, had to clear the wheel wells). My large smoker is pretty deep. Long story short, instead of killing myself loading my drums, I am going to put a cargo carrier on the back of trailer. Does anyone have a good hitch cargo carrier that will transport two drums without a lot of extra/wasted space?

P.S. I am picking up two shiny new gateways on Saturday !