Yes, I can be said that the Hydroptere record was beatten in open water.
So, why windsurfing does not seem able to participate to this record hunt? I see one main reason: money. The record of Antoine Albeau can be improved (it was not make by really ideal conditions: choppy canal, run too downwind a absolute freezing cold) but windsurfers would need a big amount of cash to do so to allow our champions to totally dedicate their time to this hunt - as the kiters do. We need to find the good spot (massive wind everyday) and to built there the good infrastructure and then stick Albeau 6 months there... But who would pay for this?