We improved the A/C circulation in our 10.0 by hanging two box fans pointing in opposite directions, moving the air in a continuous circle. I used double sided velcro to hang the fans from the ceiling tube frames. When folding up the camper, the fans fit nicely in front of the air conditioner. I currently duct tape a piece of cardboard to direct the air flow in an upwards direction from the A/C unit to get the cold air up to the box fans. I need to upgrade the cardboard with durable plastic.
Finding a solution to that same problem is also on my to-do list.
Are you using the full size 20" fans or something smaller? I'd love to see a couple pics of your setup.