The 10' hose that came with our trailer works fine in most situations -- except for one of our favorite campgrounds. Every site is a full-service site, so there's water, power and sewer right there. The sewer outlet is a few feet away from the power pedestal and water tap, so when I line up the trailer so the dump valves are within 10' of the sewer dump, the power and water will be in the way of the trailer's slide. So if I move the trailer over enough so the slide won't hit anything, then the dump valves are too far away from the sewer outlet. Since we go to this campground quite often, I can justify getting a longer hose.
Geoff & Jill
& Sierra, the little white monster
2013 Ford F-150 XTR SC Ecoboost
2015 Jayco Jay Flight 24FBS