Seeing as their metabolism is tied directly to water temperature, it stands to argue they need eat more in warmer water, assuming all other conditions are good. In other words, they gotta eat sometime, and a lot. For me that means a few things - fishing at night or dawn and dusk when bass are at an advantage. Another thing is to go bigger with bait profile. I do have a tendency to look deeper than usual whenever it too hot, or too windy, or a cold front blows through. Those deep fish don't seem to be as bothered by changes above the water line. Going deep and going big is relative to your water, and it has worked well for me. As far as time of day, most of my biggest bass have come mid day.