I wasted my money on the berkly vanish flourocarbin for mainline. Vanished it to the trash can after the first trip. Didnt like the feel of it. Lost a lot of fish because of lack of stretch in the line. Fish would hit it hard then rip the hooks at the same moment. I would use it as a leader only. Big advantages as a leader. But make sure you buy the leader stuff and not the stuff for mainline. I started using Izor line and really like the stuff and that is what I have been using as a mainline.