i personally don't have any suggestions,... at least not constructive ones , but you do know you just opened the door to all of us to use this as a "where's yer sign" forum!!

 

Definately up. Test run by Ford Aerospace on a 97 F150 shows that with the tailgate up, you build up an air bubble in the bed. The air that flows over the cab then flows over the air bubble decreasing drag. There is a copy of the report at truck gadgets .com Very interesting