The biologist seam to agree that the mortality rate at, and post, weigh-in's is low relative to the event size and the fisheries capacity; they also seam to agree that human error at the weigh-in's, or on the release boats, are the more significant factor in tournament mortality. They also believe that close management by the states and accountability of tournament directors is the way to go for now.
IMHO, I don't see the technology available that would eliminate the human factor of catch-and-release at the boat during tournaments; with just the angler and a Marshal on the boat, and with the money and rankings involved there are just no checks and balances available there and too much temptation.
Between state fisheries restocking programs, the advancements in boat live-wells, tournament weigh-ins, and release boats, I don't at this time worry about the future of the Black Bass. If you look at the history of fishing, and tournaments for that matter, one would think there should be no fish left to catch, but we know that's not true. I can show you old fishing books showing photos of large numbers of bass hung up for display on boards with the angler next to them with a big grin on their faces. And this holds true for other fish species as well. Also, there were no controls over commercial fishing years ago that had significant adverse impacts on many fisheries across the country. The saving grace here is we have learned from the past and are paying more attention to the future. I believe the Black Bass will be fine, it's nature we can't control that I'm concerned about.