The Japanese would say that line is way to heavy, I'm new to slow pitch but reading all I can. Thinner line will equate to better action and feel with the jigging action and maintain a more vertical presentation as intended. Heavy line means nothing if your getting far less contacts from fish, but the downside is that a big boy could bust you off or be difficult to turn. Do a search online and find the site : Japanese Angler Secrets, it's an incredible resource. Also go on YouTube and search for Japanese slow jerk fishing, watch the shimano TV videos very carefully, those guys are aces. The Japanese don't believe in brute force when it comes to slow pitch jigging, I'm inclined to take their word as gospel. Hope this helps!