Fin for the isonic 131 ?

[IOANNHS]

Hello.I recently bought the isonic 131,with a 10.0 maui sail TR6.What is the recommended fin for this board and sail?I already bought a techtonics talon 50cm fin.It is great in stonger winds but no early planning in light winds.Should i buy a bigger one,and which is better?deboichet?
I also plan to buy a 9.0 sail,or 8.8.but fin size do you recommend?Have in mind that i weight 97kg.

[nonopr]

You need an F4 fin D2 52cm XS. www.f4fins.com

[mark h]

Im on a iS144 and using a 9m & 10m with a Select RS7 51cm and 57cm. The 51cm does me for 95% off the time, I only use the 57cm when its stupidly light winds. I'm 105kg, so similar to you.