About 25 years ago an elderly bait store worker told us he freezes leftover live shiners, quickly drained, packed with salt and then put in baggies. They sort of "mummify" and when thawed they are almost like leather. They stay on the hook quite well, lasting 3 or 4 catches. They keep well for the next season too. One thing, don't thaw and then try to refreeze them.