I have seen some of the older day tourneys Paul.
Like you say,on stringers,even Guys lined up with the fish in plastic bags with no water.
They have come along way since then. Myself I dont see what more can be done as far as care for the fish during the day,except maybe they could do like Lew was saying. Honor and pics,,,,,,,,,,,,,,,,,,,,Dont see that in the near future for that sport.
The livewells these days are so much more superior then back in the day aswell.