I heard this works well with braid (fireline) but I doubt it will work very well with fluro or mono. If you use fluro just spool up a 1/4 of your spool with cheap mono and fill the rest of with fluro of your choice. You don't have to respool as often as you think with fluro. Just strip off 10 ft or so when you go back out on your next trip. You hear the pros respool everyday when they fish tournaments. I guess I would to if my line was given to me for free.