I've been looking at this again -- EZE-Kleen --
as the current rig has more than adequate storage for the two-piece elbow (and the kit plus several optional extensions), plus with the washer/dryer aboard there will be times I have a high water use rate while parked long-term (once I have that up & running again).
I'm pretty tired of corrugated hoses for long-term situations. And the higher-priced hoses of that type don't seem any better.
The Sewer Solution
is on the list, also. But I don't think I'd want to leave it out in high heat/sun full-time.
The pair may be a decent solution for long-term plus
"challenging" sewer runs.