Hydrofoil is the only way -- but unless they can lift out completely (like Hydroptere) they don't stand a chance.... and if they're planning on dragging a lead keel they're handicapped from the get-go. I suspect Speed Dream is planning on using underwater "lift" foils (in the vertical plane) instead of lead to counteract heeling forces. It will be interesting to learn more about this project, but I think a multihull like Hydroptere has an inherent stability advantage that allows the boat to be pushed harder without spilling wind through heel. http://www.youtube.com/watch?v=GQ-gdqo35os(nl)