My question, is what if any soes rod spine play into the ccs data?

I know spine gets debated quite heavily. But the instructions tell you to have guides up when doing the test. Depending on whether you placed your guides along the spine or on the opisite side, would that translate into a noticeable difference? Could it be the difference between a 4.8or a 5.15 score on a tested "5wt"? Maybe more?

By the way, I think the Common sense approach is great, and the tests with my own rod collection already confirm what I learned by trial and error with diffirent weight lines on different rods.
Any thoughts are appreciated.
Thanks,
Jeff Hanlon

The article was originally written by the author for use on finished rods. Thus, the mention of the guides. However, spine up, down, to the side, etc., will only show about a .2 difference in ERN. Not enough to really be anything to worry over. But I would suggest that you find one way of doing it and then stick with it just for the sake of consistency.

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Thanks Tom. After I read the articles on the Common Cents approach I couldn't wait to test all of my rods, some custom, some factory. I did all of them exactly the same. This has tought me a lot and allowed me to express some of what I already knew by feel.
Thanks again to all the great information, I can't wait to start my next project.
Jeff Hanlon