Mid week sail at Boggy. Wasnt sure about the forecast thought I was wasting my time on the way down. On the water at 11.30 with Gareth and Chris Stott. About 8 to occasionally 12 k.  It then picked up 12-15 for around and hour and a half was pretty good although a bit up and down Bloody cold though.  Dropped to nothing around 2.00 packed up and left as started to rain.  7.5 Severne NCX on 136 L JP.  When I tried to download the card speed and distance show on the GPS but wont show when I plug it into the computer, any suggestions ?