Are RV sewer hose supports necessary?

I bought a fifthwheel for the convenience of having my own services in my unit. When we camp for a weekend and have full hook-ups we use them. We take normal long hot showers (sometimes 2 a day) and will drain the grey water Saturday afternoon. I use a plastic expanding hose support for the stinky slinky. Once I am set up I don't need to handle the poop pipe again until I break down Sunday after lunch. I just pull a handle and walk away for a few minutes. No need to pick up the stinky slinky and walk it to the drain.

Do you need one? Based on your example of the kind of camping you do, probably not.