I’d spool it right like right before you go fishing, a day or two. Fluorocarbon gets coiled badly. This thread should be in the Fishing Line,... btw. Fluoro doesn’t breakdown in UV like mono does. I don’t know if this will help with Fluoro but if you put mono in hot water while spooling, it looses the line up and reduces coils, you could probably try it with fluorocarbon.