Hoping. I'm going to figure out how to test that (wife's meat thermometer). Surely it will reduce lift and drag (good). If temp goes down, then we got all three.
Many low cost multimeters come with thermocouples. I think that would be much easier and more repeatable than trying to use any regular thermometer.
The truth is, nobody is 'very smart' on this stuff. None of it is truly intuitive.
Going back to page 3, to the quote above. AJ Foyt once said about aero at Indy "if I taped a beer can to my wing and ran a fast lap, next session everyone would have beer can taped to their wing" I remember that line because thats what we were doing at the time, just copying aero from fast cars.