I searched, too, and it looks like nobody has come out with one for the 2020+ design update. That said, we've been full-time for six years (don't stay in one place/move frequently) and I've never damaged the tailgate. You just have to have a checklist for hitching/unhitching.
Rob
U.S. Army retired
2020 Solitude 310GK-R
MORryde IS, disc brakes, solar, DP windows
(Previously in a Reflection 337RLS)
2012 F350 CC DRW Lariat 6.7
Full-time since 8/2015