Jeff,
Not having rowed a lot of boats I can't compare the CS's performance to much else. After two outings I am pleased. Will use the oars to get in and out of docks and to move through the odd doldrum we get here on the northern edge of the prairies. The boat is a light for it's size, I estimate 4 to 500 libs without any gear, so responds quickly, turns in a tight radius. Installed two sets of oar locks as per the builders recommendation. For the forward position I sit just forward of the centre-board case with back against the coaming. An interesting combination, for longer distances is is to have one person with an oar in the forward position and another in the aft position rowing on the other side. My wife and I tried this and it worked well. Haven't measured speed yet with the GPS but I am satisfied going several miles is easily within our physical capacity.
I sewed leather onto the horn oarlocks thinking that may provide more options for positioning the shaft (loom?) without getting chaffing. For example when standing I can draw the blade nearer the boat. So far, so good.