If this hitch is one of those, that bolts onto the bumper, it is not a good idea to use a cargo hauler. Any weight placed on the hauler, plus the weight of the hauler itself, is intensified by distance it sticks out from bumper. Besides the posibility of ripping the bumper off, it could take away enough tongue weight, to cause sway problems.
TT bumpers are not designed to carry any significant weight.
Many folks get away with the bike rack idea, because, the weight is more vertical to the bumber. Not so much leverage as a cargo hauler.
I know this from experience. The thin metal walls of my bumper, could not withstand the weight and bouncing of an empty cargo hauler. Couple broken welds, and the hauler was dragging on the ground. That was several years, and a couple trailers ago. No more haulers for me.