Line weights that match specific angling conditions can vary greatly. Some situations require short casts and some very long. Into a constant head wind on a salt flat can cause great differences in the perfect weight line for that moment. This chart is meant as a guide for my switch and two hand rods. The single had rod selection can be used as the weights given for that blank. Even with modern single hand lines there are some that are made for Spey style change of direction casting. This is one of the most confusing aspects of the line industry today. If I can be of any assistance in your understanding of line weights and their use please contact me at William@FlySpoke.com.