I never claimed to be a pro ,I just fish alot and fish my gear hard there are nights when I cast at structure and I know it is rubbing against pilings or a bridge.I worked in a shop and hung around shops long enought to know that line should be changed ever year,If you fish around the reefs your line is taking a beating or if you live line the bridges ,the bait is swimming around everything.think about it ,you spend all this money to get out there the last thing you want to do is hook a big fish and worry about your line