If anybody has any question as to how to take care of your catch during a tournament, the people at Texas Parks & Wildlife can sure show you how it's done. There may be as many bass tournaments held in hot weather/hot water in Texas as any other state in the union and despite that pressure, they arguably have the best bass fishery in the U.S.
If you want some help in learning how to take care of your fish you really need to check out the following links:
Livewell Management - http://www.tpwd.state.tx.us/fishboat/fish/recreational/catchrelease/live...
Oxygenation of Livewells to Improve Survival of Tournament Caught Bass - http://www.tpwd.state.tx.us/fishboat/fish/didyouknow/inland/livewells.phtml
Treating Barotrauma in Largemouth Bass (Video) - http://www.youtube.com/watch?v=pEeQrsHcwf8
and Removing a Swallowed Hook (Video) - http://www.youtube.com/watch?v=3RGTL9RBG2s&feature=youtu.be
I have already setup the oxygen injection system in my livewell by using all the vendors they recommended in the presentation referenced in the "Oxygenation of Livewells" article. After I got the parts, it took me less than an hour to put it together. For less than the cost of a decent rod and reel, I am confident my fish will love it when they go in my livewell this year.
I've said it before, I'll say it again. Sometimes things happen when catching fish that they don't make it no matter how hard you try to take care of your catch. But those are the extremely rare instances. Fishermen that don't put forward the effort to ensure the health of their catch should be penalized to the extent that they will never let another fish die because of their lack of attention. That is why I advocated increasing the penalty for every dead fish (1st fish 1/4 lb., 2nd fish 1/2 lb., 3rd fish 1 lb., etc.) and will continue to do so.
I hope you will take the time to look at the info and install on oxygenation system in your livewell. It really makes sense and it is not expensive.