Yeh I agree it can work with an adjustment and over quite a small range; of either windstengths or weights.
Variable which has biggest influence on outcome is wind speed; purely because its effects are not linear.All others are.(Well nearly; apart from drag which favours heavier sailor.(ie double weight you dont double drag.Double wind speed ; well you know)
Think I`ll stick to sending a wind dummy out before I sail.Its still best option.
We havent factored in to any of this efficient boards.My recent Goya certainly gets me planing with I`d guess half a metre less than I was used to using.(Sorry *B)
Good sailing Davide.