For Coho I personally enjoy going a bit lighter than most - Most Coho are in the 3-6lb range anyway, rarely you get into a 10lb fish, and even when you do you can still land it fine with a lighter rod. Honestly, I've been eyeing Riebers spinning rod for sale, but don't need another. It's a steal price for a nice rod and decent reel. The rod is worth double his asking price alone.
In raging rivers it is no doubt too light, but from shore fisheries like the beach or Fraser it is fine.
I use a Fenwick HMX 2-6lb 9ft moderate-fast action spinning rod for all my Coho fishing. It's worked fine for 4 years now . Landed the occasional chum with it too.. but it'll be bent right over, lol.
I've done some casting practice on a friend's 9' rods. I couldn't cast very far with a 9' Medium Light 4-8 lb Eagle Claw Feather Light (with both smallish and biggish lures), but did much better with a 9' Medium Light 6-12 lb Shakespeare Wild. That made me nervous about rods with lighter line ratings, and got me looking at 8+ lb rods.
The reading I've done gives me the opposite view of what I've experienced. Everyone says the lighter rods give more distance. I wonder if the frustration with the Eagle Claw is due more to the action rather than the power of the rod? Maybe it's a slower rod and works like a weaker spring?
Thank you everyone for all your help.