@lpskier
This is tricky. For me, Yes, there are things about A settings that help keep the boat moving out in front of the skier on the way into the buoy. HOWEVER, its no good if you are not getting enough energy on the way into CL. You have to get support and adequate throttle into CL before anything good will happen into the next turn.
Some boats at 36mph are almost too sensitive (too fast on/off throttle), and moving from a "C" to an "A" has helped. Load that same "sensitive" boat up with a bunch of people, gear and fuel, and the C will probably be better then A.
The same boat that feels good on an A setting at 36 might feel terrible at 34mph with "A". Dropping to 34 over the last 4 years I almost always have to push to C2/C3 before I like what I am feeling.
I think a lot of it has to do with the ZO programs, Hull Drag, and Propslip/Engine RPM for given speed and what we are asking the boat to handle in terms of crew weight, fuel type, intake air temp etc and then on top of that handle the skiers input off the ball and behind the boat.
There's no "right" answer. But, if you study the numbers provided in the ZO tables - interestingly there are things about A1 that are more similar to C3 then you might think.