The Futura 141 would probably be the best choice for your 8.2 H2 in 12 knots. I have the Futura 133 & weigh 75 kg. For me, the 133 feels best with a 7.6 sail. It is fine with an 8.5, but does not plane up nearly as early or feel as good as a larger board with an 8.5 sail in 12 knots. The 133 can feel better than the 141 with your 8.2 but only in higher wind speeds.