I got this from the G.Loomis website.
" Fly Line Ratings
G.Loomis fly rod blanks are rated for weight forward lines. Ratings are the same for double taper line and keeping a lot of line in the air, you should move down one size. If you are using a shooting taper of casting very short distances, move up one line size. For example a 9' blank, rated for a #5 line balances at 35-40 feet with a 9' leader, but if you frequently make casts of less than 30-feet, you may want to move up to a # 6 line.
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