Aerodynamic fun

I’m seeing a resemblance here

 

To avoid all these hate (well some are funny) comments just paint it with rhinoshield or bed liner and call it a full skid plate.

I would like to see more pictures of the mounting points etc.

 

There are so many other factors here: cross winds, head winds, and tail winds, etc. Also, there is a slightly different amount of fuel in each photo making the weight of the truck inconsistent between tests. Though is is an interesting concept and test, I am not convinced, in this case, we can come to the conclusion that these fins made an improvement in aerodynamics.

 

One interesting test would be to use the aero tabs off the back of the cab on a truck with a softopper. If there is a difference perhaps this would be visible in the amount of deflection of the softopper.

 

Cool experiment OP