I didn't want to wait for the Hollywood Rack to show up and so I bought the Vibrelli. It is rated for 65 lbs. and the bike is 64.9 pounds without the battery (which you don't want mounted when hauling it anyway). And now the Hollywood rack is in stock.
I haven't actually received the bike rack and it's supposed to arrive today. And so, the question remains. Has anyone used the Vibrelli Bike Hitch Rack V70 for RadRover 6 Plus?

P.S. I've returned the Vibrelli and ordered the Hollywood Sport Rack through Rad. I can wait. Better to be sure about what the hitch bike rack can handle with two 65 lb bikes. Good thing I did not open the box.