I tried searching for this but came up with nothing. I was thinking of either mounting light metal plates or strips or rubber across the bottom of my truck that could be easily removed for maintenance to decrease the drag on the bottom of the truck. I know that this concept works on race cars and with the ease of getting under these trucks and my ready supply of thick rolled rubber i was thinking about doing this. Don't know much about calculations to figure this out but would be interested if anyone had any input or has tried this. I know it sounds like i'm trying to rice it out but from what i understand it would decrease the slowing of air under our trucks, decrease our upforce, and decrease our wind resistance. I my materials are just lying around i'm thinking why not try it.