Chasbo,

You'll do best to use whatever size line is marked on the rod blank just above the cork grip. The way to make any fly rod or line cast well is to learn how to fly cast. I see guys spend thousands of dollars on new rods and lines in the mistaken belief that it will help them cast better, when they'd be far and away better served by spending a couple hundred on fly casting lessons. For that investment the ability to cast any rod and any line and a lifetime of enjoyment awaits.

Sg