Do you love big bluegill?
I just purchased some Gamagatsu circle hooks in size 8 to try for the exact purpose of trying not to kill bream that swallowed the hook. The hook is supposed to be self hooking in the corner of the fishes mouth. The hooks I received had an offset that I figured would still catch in the fishes gullet if it swallowed the hook so I straightened the offset so that the point was aligned with the shaft. Only managed to catch one red ear about 8" long that had enough time to swallow the hook as I was fishing deep. It was hooked perfectly in the corner of it's mount.
More testing to follow. I had three wax worms on the hook a bait, by the way.