Used to operate the 747-200 into a 7500 foot runway and were usually close to max landing weight and 25C Would witness all kinds of methods, from braking shortly after touch down or waiting till something just about 80 kts. Just about every time the large ground fans were blowing shortly after block in. Even witnessed on ground tech pouring bottled water over the top of the tires (that is a whole another topic).
The best results were to wait for as long as you could, 80 kts or so, then get on the binders with some gusto. They almost never got hot.
Brakes have certainly gotten a lot better over the years.