both... 6/0 and 7/0. I used to fish the 6/0 exclusively to help avoid snags, but lately I have been favoring the 7/0 hooks. I like the wider gap for larger fish. That being said, i dont use the live bait hooks, i use the octopus hook. I like the longer shank as opposed to the live bait, as well as the offset beak as opposed to the live bait hook which has no offset.
In the long run, if you are using 6/0 or 7/0 for live eels, you are in the right neighborhood. Feel confident with either
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