They don't hava a website, but that was no ploblem for me
The advise I got was following;
My name is Michal POL 83 I am also competing oin formula and I am Andrew's son. So I would recommand you fin cut 72 it has a lot of power, you can go planning really easily in light wind. It's a fin with soft top, the rest of finn is pretty hard that's why you don't feel overpowered in strong wind conditions
A lot of ice here now, but when it melts I will give you feedback.