Avet magging-how to and why?

[O.D. Mike]

Magging an Avet,
I'm confused how the magnets slow the aluminum spool down? I have an Avet SX and I'm thinking of magging it, because of the back lashing. Does anyone on the forum have any experience magging Avet reels. I did a search and wanted to see if opinions have changed since 2008?

I've read that you either epoxy magnets on the inside of the reel or epoxy some type of metal to stick the magnets to.

I think I need the theory behind it, to help me understand.

Question, does magging take away distance?

Thanks,
Mike