Big Backing

[ridgeliner]

Thanks tailingloop. My biggest fear is getting into a big fish, having it take me well into the backing, and then the backing snaps, taking my entire fly line with in...

I think that you should worry more about running out of backing........not that the backing will break. With a smaller backing you will be able to have more of it on the reel. Like stated above, go with a backing that is just a little heavier than your fly line.