In my opinion, in this heat the best way to keep bass alive is to let them go. Riding around in a livewell, no matter what you do, no matter how lively they seem, is not good for the bass at all when water temps get really high. Tournaments kill as many if not more than the people who eat them. One of the largest boat docks on Kentucky Lake (the owner loves fishermen and tournaments and of course part of the reason is they bring him business) but he will tell you to show up the next morning and look at all the dead bass around the dock. There is a reason some tournament have a release boat that carry the bass out in the middle of the lake and it is not to insure they will live. Catching fish in the HEAT, especially deep, carrying them in a livewell for several hours, is not a good thing unless you plan to eat them. I like tournaments and have nothing against them, but it does crack me when tournament fishermen raise heck about someone legally keeping a bass, when they carry them around in a livewell in the HEAT.