Fin(s) for Futura 111

[cirowind]

Dear Starboard Team,

I just bought a 2009 Futura 111 and need to know if I need to purchase an additional fin. I´m an advanced windsurfer, sailing both on lakes and sea with no waves (average 12 to 25knots of wind) weigh 75 kg and plan on using this board with my current quiver of Hellcat 6.7 and Excess 5.9. I suppose that the supplied 38cm Drake fin is ok for the 6.7, but should I buy a smaller one for the 5.9 sail ? If yes, what´s your recommended size and shape ?

For winds above 20/25knots I intend on using my smaller 85l jp freestyle wave board (thinking of buying a kode....) both with the 5.9 sail above or my even smaller 5.4.

Thanks in Advance