You're not the only river with 'current' problems, the Trent is flowing like crazy at the moment. Racing at our club was abandoned all weekend but as there was a fairly nice wind blowing us against the flow a few of us went for a potter. Our run/reach outward leg (including some moments of planning) took 35mins. Our beat back with the flow took less than 5.
A scalar went to sea, sea, sea; To see what he could see, see, see. But all that he could see, see, see; Was the determinant of non-invertable Matrices