No, I wouldn't even consider it, but that's just me. Before putting them back there, you might want to ride in the 5th wheel yourself while it's in motion to see just what they would experience. It's not very pleasant.
Rusty
2014.5 DRV Mobile Suites 38RSSA #6972
2016 Ram 3500 Dually Longhorn Crew Cab Long Bed, 4x4, 385/900 Cummins, Aisin AS69RC, 4.10, 39K+ GCWR, 30K+ trailer tow rating, 14K GVWR
B&W RVK3600