The wind was maybe a bit light for speedsurfing on this kit, but it helped keep the chop down to a reasonable size. Mellsten usually isn't this smooth when the wind is from the East. Very good fun & not too tiring physically.

NMEA log from GT11 (raw, uncleaned data):
http://www.cameraid.com/windsurf/GPS/JURI%20MUNKKI_1001042_20080614_145905.TXT

Nearby weather station log for the day:
http://ws.bonware.com/eps/m/archive/Day-08-06-14

GPSAR 3.3.3 was used to get the results above. RealSpeed refused to read the whole file.

P.S. Got RealSpeed working now... Average of 10 second runs is 26.837, so it's close enought to what I got from GPSAR.