Best way to hook up sewer hoses for two holding tank?

I know its not giving you the answer you want but I have the same problem.
My dump valves are farther apart than the ones pictured. I carry my sewer hose in the rear bumper and didn't want to fool with another hose.
My solution was to add permanent extensions to each hookup so I don't have to get down on a knee to hook up. Makes hooking so much easier, so now its not that much trouble to just move the sewer hose as needed.