I just got the trailer a couple months ago and haven't done much. But the one thing I really needed to do was deal with the sewer hose storage. Before I was tossing them in a hefty bag and putting them in the front pass through storage along with the elbows and parts rolling around in there.....gross!
So I got a pair of the 64" eazy store pipes. Put them in the front and made a bracket to bolt them to the frame.
I was going to put them under the rear of the trailer. But I was thinking about when I put everything away. If it's a wet muddy campground I didn't want to be on the ground right where the dump valve is to snake these hoses in.
Up front here they are very easy access to get the hose in and out. I think an added bonus to this location will be wind rushing through the pipes as I drive to keep them dry. (the end caps are vented)