While it is only a matter of time before an asymetrical "multihull" such as the one in the article above claims the outright sailing speed record from the windsurfer and most likely breaks 50kts, there is no comparison between the speeds of off the shelf windsurfers (the windsurfer rig used to set the speed record utilized a custom asymetrical sail) and production multi-hulls. The production speed record for windsurfers is in the 40 knt range (if I had my issue of Windsurfing Magazine with me I could state exactly what it is), and I doubt if there is a multi-hull out there, other than some wild multi-million dollar one off custom, that could even come close.