Steve Huber convinced me that 50-lb PowerPro would stand up to pike's teeth and
so far he's been right. One day in Alberta I caught 30 pike averaging 7 pounds
on the PowerPro without any sort of leader, and none of them broke off. I
realize that you asked about FireLine, but my guess is that there's not that
much difference between the two. After you catch a fish, I'd feel the last
foot or so of your line and when it feels rough, cut it off and retie -- just
like you do with any other line.

Family, Friends, Fishing,
Rob Storm
http://stormsrestaurants.com