FWIW....I agree 100% with everything that @bishop8950 is describing. I will add the analogy that driving the boat is also very similar to skiing in respect to ability, feel, seat time, and talent. The reality is everyone can't run 39 off no matter how much they practice or get coached etc. Your ability and natural feel/talent limits you at some point; same is true for driving. With that said, you should always strive to do better, take feedback, and try to apply that information the best you can.