Help me get better then 6 mpg please.

[GasSavers_mikemoss]

I recently started a new job that involves us driving all over the country. The catch is that the truck and trailer that the company gave us were never meant to be used together.

We have a 2005 Ford f150 lariat like this

http://www.classyauto.com/image342622.img

and a trailer roughly like this

http://www.mtairygolf.com/14%20foot%...h%20lights.JPG

Our trailer might be a little longer but basically like that. Im not sure how much it weighs but I would guess somewhere in the 7000lb range. The truck now cant pull it in overdrive and we are averaging between 6 and 8 mpg depending on the road.

What are the best areo mods we could do to the 2 things in order to increase economy? We cant do much to the truck now bc it is still under warrantee.


Thanks for any help.

Michael