I still use the Rhino hose that I had with my old trailer. I had to shorten it some to get it all in but since I already had a 5' Rhino extension that hasn't been an issue.
One thing I did was take the male end off the 5' hose and put it on the end of the Rhino in the tube. That way I could use a universal sewer elbow when I need to hook up to a sewer or dump station. I had to trim the "ears" on the male end so it would fit into the tube but I'm able to use a cap on the end as so there's no mess in the storage tube.
I put the original threaded elbow end on the 5' extension hose and keep that in a plastic container just in case I need it.