One of the guys who work for me said his dad had an "adjustable air bladder" that went between his overhead camper and the truck cab and helped deflect the wind from hitting the front of the camper. anyone ever seen one ?

 

Yes, and they also make one out of dense foam rubber. I think the air deflection is minimal, but it does keep the bottom of the cab over from getting stress crack in the skin.

 

Any idea of their nomenclature or where i could find them ?