what would be the low end planing threshold for an advanced intermediate sailor (82kg) when using a futura 111, futura 122 or futura 133 with a 7.5 sail? stock fins for the boards, same 7.5 sail on each. does good sail pumping skills make the planing difference less? also what is the trade off on the powered sailing side for these three boards and the same 7.5 sail? thank you for the insight.