We have the torsion bar axles so there is no flipping them to raise ground clearance. But I have never had an issue with dragging anything. I like the way the trailer tows, but dumping is often an issue. The connection on the sewer line is level with the trailer bottom and is pointed almost straight down. It almost always dumps a little water when you pull the cap and we have an issue with hose drainage at times.
My solutions were: 1) to get one of the caps with a hose fitting on it. That way I can hold the hose under the small cap, open that to let the water drain and then remove the larger cap. 2) I found a compact clear plastic right angle elbow which I hook to the trailer and then hook the hose to it. I wind up with a height that is fairly close to that of the higher trailers and if I use one of the slinky type hose supports, I'm good 95% of the time. There are a few low lying campgrounds that have high stand pipes on the sewer lines so they don't fill up in flooding conditions. About all one could do there is have a pump.
John & Nancy
Jay Feather 25Z 2007
Ford F-150 XLT 5.4 Triton 2008