Fire up your google finger boys and check out bass delayed mortality studies. One ran by Harold Schramm Jr. conclude that 100 % of the fish died when the live well water went over 92 degrees and had less than 3 ppm oxygen. Well, duh, you think?? That is exactly why we old Florida fisherman used a lot of ice, working aerators, and Catch and Release religiously in tournaments. I even had a water temp gauge wired into the live well on one of my boats to monitor the temp. The only time we lost a fish was when one had it gills ripped. I can tell you horror stories about bass populations collapsing due to improper and/or over aggressive weed control, but no examples of a decent sized healthy lake's population being decimated by tournament fisherman.