I wish they would add the info to line lables on the box. Head length and weight.
Everybody does. I wrote Cortland and Sci Anglers to get total head weights on their tarpon tapers in 10 ,11 and 12 wts. Posted them on one of the forums, but can't remember which one.
Rio lists "head wt" on their website, but it is wrong and is only the first 30'. Elsewhere on their website they list the identical wt for the first 30'. I haven't written them yet for the true head weights.
The AFTMA method is absolutely moronic, but a great way to sell more lines by keeping us guessing and buying lines that don't work with our rods.