The problem is that girls like Kristin, who are undoubtedly influential, if not the "most influential" are so busy being influential, that they don't have time to campaign for votes like some of the other girls are. Kristin is incredibly busy organizing the next KSP stop at the moment, so she can’t do this herself...
So in that sense, unless fans who believe a girl like Kristin should win or be voted the most influential help spread the word for her, then no, the competition probably won't determine who is doing the most for kitesurfing or who the most influential really is, but it will determine who has a large following of dedicated fans who are willing to take action for them, which probably is an aspect of influence in a way, but it certainly isn't the whole picture.
But even if these girls don’t end up winning, the competition still created exposure for what they are doing, and hopefully that is a worthy goal in itself.
Disclaimer: I am the organiser of the competition, so if you have any constructive criticism or suggestions on how to improve on what we are doing, please do let me know.
Our ultimate goal is to generate attention and exposure for girls in kitesurfing, so as to attract more girls to kitesurfing, and in my opinion, all the hype and buzz does this, regardless of who wins in the end... but feel free to disagree.