A) the center fin out of a board will typically help with proper edging technique. It forces you to keep your edge all the way through the wake instead of relying on the center fin to guide you when you are flat.
BThe PS3 is a great board to ride finless. It is often done this way.
C Taking the center fin out will also make the board much easier to break loose. It will be much easier to do surface spins.
D All of the above
D - all of the above. D is my final anwser.