MK dunno if that is the rules, I don't read the PWA rule book

Buuuttttt I wonder if they do abide by it, as this season I have seen a few pro's use customs painted up to look like other boards. No I will not say who, where and what boards as I don't think that is fair.
Their way out in a comp of course is to say it is a proto for next year.
Anywya I also find the ranking interesting as when have you ever seen a pro wavesailor on North and Starboard? I can't think of one.
Most are Severne / Starboard and then a few on other sails....... and then there is the absence of JP's as others have said. Thus these rankings must be based on RACE results only not the whole year over 4 disciplines (or is it 5 now that slalom is trendy again??)