Oh No. Here comes Harry !
My trailer is 6 x 12 single axle. I pull it with my 2004 Explorer 4.0L V6. With my bags and fairing the Rocket can only go by itself. I can move and change my front tire mounts and get 2 standard bikes in quit well. I feel the weight either way and my gas mileage drops from 18 mpg to about 10-12 mpg.
With 2 Rockets consider the total weight of trailer and load and the terrain you will be traveling. Consider your tow vehicle capacity and does the trailer need brakes and tandem axles.