Originally Posted by wannafish
I am speaking of an economy brand here so take this for what it's worth but I replaced an 8.5' Fenwick HMX 6wt with a 9' HMX recently because I had lost the tip section of the 8.5' rod. I can't believe the difference in feel that 6 inches made. I don't find I like the longer rod as much; seems a lot heavier and thicker in the butt section, almost feels more like an 8wt than a six.
Yes, that is the point the Orvis designer I mentioned back in post #8 was making. To get those extra 6 inches you can't add more tip because you have to maintain a taper and it's already as thin as it should be, so you have to add to the butt where it's stiffer and heavier.