Can your friend get a tube down into the tank near the bottom of the tank, and thus siphon or pump out water directly? If not, try disconnecting the fuel supply hose where it comes to the Racor (with fuel supply valve at the tank closed).  Run the fuel supply hose into a bucket, open the valve long enough to drain what will safely fit in the bucket, then close the vale, and repeat until little water comes through. Unfortunately, I have had to do this. Richard Cook Dream Catcher Nordic Tug 37-065