Everything is worth a try. If you have the leadcore I would say spool a couple reels with it and give it a try. The only thing I'd do different is save the money for flouracarbon and use regular mono....but that's just me being cheap. For crappie IMO the only thing that really matters is keeping the jig above the crappie's eyes, the size jigs they want, and the colors as well, and the speed they want it. Anything you can do, especially if it's outside "the box", might give you the edge that puts more fish in your boat than what all the other fishermen are catching. Just be sure to post your results so we can all learn something new that you might find out for yourself.