This time no backup from me. I was on the water at Ribič with JP Slalom 101 and Vapor 6.7, but had problems with my SD Card. On display max. speed was 30,9 knots.

why don't u use data logger for session ?

no need for sd card at all for one day

I was never able to load data from data logger to PC in a right way and I didn't know that card would have problems. It happend first time in 3 years.

it is very simple, turn on gt31, go through menu on navilink mode and enter it

run gpsresults and file, download trackpoints from gps and here it is

or use latest version from locosys downloads, install file navilink II, open it, turn on gps, again go to navilink mode, enter navilink mode,

in program just read data log. In his folder you will find all needed files, and here you can do much stuff more, all but no any speed

analysis. This is just for reading data from logger and from card also.

Navilink II v2.50 http://www.locosystech.com/download/handheld/GT-31/NAVILINK_Installer_V250_B0826A.zip

and take care that GT is in Navilink mode, whatever program you use to read out data

hope that helps...

OK, done it. THX Warrior. SO if I understand correcty I have two sets of same data: one on SD Card and one in Data logger.

Yes, GT allways first save in internal data logger, and when you turn off or on he first backup data logger into SD card and start then with NEW FILE. Don't reason for panic, becouse even if you don't have SD inserted you can freely ride all day and have all on your data logger.

SD card is more like backup unit, and there you can store few years of sessions, if you have like 2Gb SD ;)

NP for helping you out. Enjoy it