I think Nic is correct, tracking fins come standard with the pro package is what i heard, but i agree with Nordicron, they should be standard on a 100k wakeboard boat! I have them on My X-30 and even had them on my old Moomba.
Different people and dealers have different things to say about the boats and the wake but from my experince the X-30 does everything very well.
Rear seat is the best option going. Don't buy a 30 without it!
2013 X-30, 6.0L with 2500lbs of ballast and 500 lbs of lead.