I'm looking at the righting moment based on where the platform rotates as it starts to heal. While the hulls are in the water, that rotation would mostly take place at the leeward hull where it contacts the water. The board (depth) at that point has an affect on how easily the boat rotates related to leeway/traction in the water. Most of that righting moment in a floating mode would be calculated at where the hull contacts the water and not the board...BUT, I'm sure there are some other complex dynamics related to heal that that an inward board placement would negatively affect. For instance, you would lose board depth in the water as the boat heals if it were placed inboard from the hull.


Jake Kohl