Everyone has a little bit of a different answer for this one because people have their own preferences for how they fish. You can use a line anywhere from 10-12 pound test and have that work great, but you'd also be just as well with using a line that's 20-30 pound test and up. The heavier pound test will hold up better when reeling in those much larger lakers, but the lighter line will work too if you're careful. It is whichever you want to try and maybe the water you're fishing doesn't have a lot of big lakers so using a lighter line is a lot more convenient.