Re: How do you know if a line is too heavy for a rod?
It is relatively simple to tell if a rod is under or overloaded for your personal casting style.
Put the fly rod on the ground and lay out 30 feet of fly line out of the guides. Pick up the rod and make sure all the slack is out of the line. Makes some pick up and lay down casts with that amount of line.
How did the rod feel - underloaded, overloaded, or just right?
If underloaded, pull out 5 more feet of line and try again, If overloaded, shorten the fly line by 5 feet and cast again. Repeat until it feels just right. Weigh the line and you have just about the right rod rating for you.
"Discovery consists of seeing what everybody has seen and thinking what nobody has thought"..........Szent-Gyorgy