Agree and ironic timing since I'm setting up my 9' oars for a 12.5' cat in the garage right now and am not going with counterbalancing with them, don't need it.It seems to me that the longer and heavier the oar the nicer counter balancing can be. The fat 11' Sawyers they all seem to give out among Grand Canyon outfitters are very nice counter balanced.
What I think are hilarious are the huge slugs of iron they make to counter balance--that is not a good system. I pulled a 9' Cataract out of a pool on an ELF float this summer. That damned weight pulled it straight to the bottom. And on a 9" fiberglass oar they are not even remotely necessary.
But to each their own.