found in my boat

a spool of PLine Floroclear copolymer 20lb test what can I do with this,does it sink,float or what

To me, if it's old enough that you "found" or atleast your post hints towards you have no idea where it came from. Trash it, before it becomes a heart break story.

if it's not discolored and you can't break it, use it for c-rig leaders. It will be semi-transparent. I use it with a 65 lb power pro for main line. it won't sink like FC, it's like mono.