Looks like you have a TT, Travel Trailer, my input would be for a 5240 BT Cruiser Class C.
I purchased a 10’ length of 5” x 5” PVC Fence Post and two end caps. I cut the post to fit under the coach, side to side and mounted to frame rails behind tow hitch. Attached 1 end cap with short screws and other end drilled a 1/4” hole through cap and post to fit a rod for removable cap. This set up holds two 10’ lengths of Camco orange sewer hose plus 2 5’ sections of PVC rain gutters (hose supports).