I know most people do this, and I know most of us will be using new line this spring. However new line can get nicks in it very quick, even after one cast. I always run my fingers over the last couple feet of my line, including my leader before every cast. And it amazes me how often I feel small knicks or frayed spots in the line even after a couple cast, and I always cut it off and retie. I remember last May when I caught a 50lb flathead, I was using new big game line, and on the second or 3rd cast I felt a small nick in the line a few inches above the leader...I cut it of and retied it...And I caught a 50-lb fish minutes later. I have no doubt if I had not checked my line it would have snapped on this fish. It is better to take a couple seconds to check you line, and then a minute or 2 to retie, than having the hearbreak of loseing a big fish. So controll what you can, it may save you a big fish!