What am I reading? I mean I understand where you are coming from but no, just no. Have you seen gymnastics coaches? Sure they might be able to do somethings but for the most part they themselves were never on or in the same level as the students they are teaching, be it Olympic or provincial or whatever, if they were why are they coaching and not being beasts themselves? Or retired, as sponsorship money for being awesome leaves you set for life.
Coaching will, no matter what help you out, they get you in the right mood and mindset and can help you with problems, if you don't know what you are doing wrong chances are they will see it and help you correct it.
In terms of freeskiing, I am sorry but most of it really isn't, yes you can do what you want but when it comes to competition scored by judges it isn't that free now is it? You have to hit x amount of jumps and rails for slope, yes you have limited options and if you choose to skip stuff you won't get a great score. In gymnastics you won't get a great score if you leave out certain elements or tricks and so on.
PARK SKIING IS NOW AERIALS.