But I digress.
To me, that rod would have made an ideal NZ sub surface rod and it was all to do with "feel". To me if I am fishing below the surface film, transmission of feel back through the rod and line are very important to me as this is how I feel "connected" to the fly/flies at the end of the tippet. That rod had the feel. It flexed back into the corks, much like my favourite glass rods do (as Swellcat points out, they are fine sub surface rods).
To me, the ideal is a rod of suitable line weight and length that you feel comfortable with that has a reasonably soft action (ie: bamboo/glass like). Now there are a few (very few when you consider the numbers on the market!) graphite rods I like for sub surface, rods like early Winstons, early Fenwick HMG's and believe it or not, my modern Sage VXP. But I hate the Sage "One".
If it is stiff as a pole and very fast actioned, odds are it is not going to become one of your favourite sub surface rods, can be a great dry fly rod....... but who in their right mind fishes dries on the surface all the time?
