The lowest drag points on my Hood River 177 are the dump tubes.
Those two dump tubes hang way down below the frame, below the torsion axles, and well below the holding tanks, so if they moved them up a few inches to touch the frame they would still work quite well to drain the tanks.
I hope the company reads this stuff.
Forrest River could move them up to touch the bottom of the frame and give a few more important inches of clearance, which is a lot of clearance, especially if you camp up rough two track roads like I often do, or even when driving through dips and potholes on paved roads.
My Hood River 177 looks impressive sitting on level ground for ground clearance, until you look at the dumb drains that hang way down below the frame. Still love it though.