I have encountered so many uphill sewer openings, I almost wonder if that is the norm rather than the exception. Without a macerator pump, I can either "walk" the poop down the hose, or use a Sewer Solution. The Sewer Solution is usable, but it requires a lot of water, and I may not have it available. So, the ideal is both. If the dump port is downhill, out comes the slinky. If it is higher, then I unsling the macerator hose.