Here is the final part of the article... Enjoy.

Chris

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Best for the fish is using barbless hooks. They greatly reduce hook damage to all mouth tissues and rotate out easily. (See the through-the-gills comments below).
Texas researchers recently compared the mortality of largemouth bass hooked with live bait and artificial lures. Their main finding: "there is no biological justification to regulate use of live bait to catch bass" has been widely publicized. Their other findings may help anglers make appropriate adjustments in technique. In two separate tests, largemouth bass in a private water were landed by TPWD anglers using Carolina-rigged scented plastic worms, crankbaits with
multiple treble hooks, and live carp fished with either a Carolina rig or a float. To simulate normal fishing conditions, anglers with different levels of expertise were used.

While fishing with floats, anglers were instructed to delay hooksets until floats went completely under, simulating the way typical amateur anglers
fish with unattended rods. Under all other conditions, anglers were to strike immediately upon feeling a hit. Captured bass were immediately examined to identify hook-related injuries. When bass were hooked deep in
the throat, the line was cut and hook left in place. (TPWD did not identify whether the cut was made in the traditional way near the hook, or with line remaining outside the fish's mouth.) Bass were then kept in a large holding net over a 72-hour observation period to determine short-term mortality rates. Sixty bass were taken using each method. Tests were made in August,
when water was warm and stress and mortality are normally high.

The average mortality under these worst-case conditions was 22 percent. Carolina rigs with flavored worms caused the highest mortality, followed by
live carp used under floats, crankbaits, and Carolina-rigged carp minnows. TPWD biologists concluded that the timing of the hookset appeared more critical than the type of bait used in the determination of short-term death rates. The data show bass hooked in the throat had poor survival odds. Evidently, largemouth bass took both lures and live bait fully into their mouths almost immediately. The bass pros' advice to strike without delay is important to reduce mortality. Angling techniques that delay hooksets should be avoided.

Carolina-rig and worm combos likely killed more fish because the lengthy leaders prevented immediate detection of some strikes and flavored worms are
easily swallowed or held in the back of a bass' mouth. Eighteen percent of bass taken on Carolina rigs with worms were throat-hooked. In contrast, Carolina rigs with live bait and live baits under floats caused less mortality, likely because live preyfish are often held in a bass' mouth for a few seconds, killed, and turned to be swallowed headfirst. This gives anglers a few seconds more to detect hits before baits are ingested. The decision to delay hits when live baits were used with floats and to strike immediately with Carolina-rigged baits likely caused the different mortality rates of these two techniques. Nevertheless, 10 percent of bass hooked on Carolina-rigged live baits were hooked in the esophagus.

It is no surprise that crankbaits are less likely to be swallowed, as their artificial nature is immediately detectable to fish. When fisheries are managed primarily for C&R or trophy bass production, it may be appropriate to ban use of multiple rods to reduce delayed hooksets, or to limit lures to items unlikely to be swallowed. In any case, C&R sportsmen will want to
avoid techniques that delay hooksets, like fishing with unattended rods. The TPWD study showed that bass hooked in the tongue and esophagus had about a 50 percent chance of dying, while bass hooked in the lips mouth, jaw, roof of mouth had 25 percent or less mortality. Interestingly, only 12.5 percent of gill hooked fish died. This finding suggests anglers who kill and eat or mount gill-damaged bass because "they are unlikely to live" are in error.

TPWD also compared the survival of bass when they were bleeding and when leaders were cut and hooks left in the fish. Removing hooks improved bass
survival when bass were not bleeding. But there was little difference in mortality when bass were bleeding or hooks were left in the fish.When I read that some anglers removed hooks by working through the gill slits several years ago, I reacted negatively, assuming excess damage would occur. But, upon reflection on the normal function and resistance of gills to external damage, I decided to test the procedure for myself. In a private pond with barbless hooks I've now made over a hundred gill-slit removals of barbless hooks without any observed fish deaths or apparent bleeding or gill damage. Several individual bass with identifying marks have been caught again and again. Although some unobserved delayed deaths are likely, if the procedure was exceptionally hazardous, I likely would have seen several floaters.

Despite their fragile appearance, the gills of bass are one of the strongest and most disease resistant structures of the bass, equivalent in resistance
to skin of the lower jaw that we grasp so handily. After all, the gills are constantly exposed to outside influences. The prey the bass eats brush against them, and many prey are caught because they are sick and carrying diseases. Prey with spines cut and stab bass in the gill areas. With food, bass often ingest goop and disease laden muck from the bottom. Moreover, each breathing gill movement brings whatever bacteria, viruses, and dirt is in the water over the filaments. To function, gills must be tough.

Still caution is needed. Gill filaments, the red comblike elements, are not reversible. Like a flag, they naturally stream with the flow. They never should be forced back toward the mouth by a tool or by reverse water
pressure. Swishing a bass or any other fish back and forth to "revive it"can do more harm than good. If the fish need to be revived by more oxygen, move it slowly forward through the water. But, do not force water down its throat by moving it rapidly into a current. However, light contact isn't likely to damage gills or introduce disease. They are as resistant as the fish's skin to light contact. By using barbless hooks that reverse easily, an entry through the gill slit can often be used when entry through the mouth is impractical or impossible with typical tools. A small, narrow pair of long_nosed pliers should be used, so the tool can be rotated without putting pressure on the gill arches. If an angler is particularly clumsy, or careless, the procedure could cause significant damage, making leaving a hook and long leader in the bass a better option with higher odds of survival.

Anglers practicing C&R rather than eat legal bass or legally abiding with a slot limit might note these findings. Fish caught with only superficial wounds are likely to survive release. Small, deeply-hooked, bleeding, and legally-kept bass likely should be eaten, rather than released to die later. Slot bass must be released in as healthy a condition as possible. And lunker bass larger than 24 inches are so rare and valuable in any fishery that they should be immediately released, even if they are bleeding or deeply-hooked.
Remove the hook if possible. Leave an 18-inch leader if you can not remove the hook.

Article about deflating bass:

http://msbm.home.comcast.net/bladder.htm