If you read enough of the 'hot bike' threads, you will come to the inescapable conclusion that none of the mods can be relied upon to solve the problem. And, as said, the problem is perceived differently by different riders.
My ST was never hot until one long ride at an STOC event on a hot day. There were a lot of twisting roads, I was braking, shifting, and accelerating, after which my bike, like a horse at the end of the Kentucky Derby, was quite hot. Riding for hours on end on the interstate at speeds ranging from 65 to 80 mph on hot days did not overheat my bike.