All these things work, including through the lips. I think my throat thing, and I never knew anyone outside our crowd to do it, was because live eel fishing was a boat thing and they don't cast and swing as hard as we. The throat gives more purchase to the hook. Even then, the eel gets off sometimes. Fire is rarely a problem in live eels. When it is, everything is a problem. One trap in live eel fishing is that there are times when other things work better.