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seanhogan said..Thanks Andrew ! Would you rather have a method to save the file properly so it can be exported to ka72 ?

Sean, I think you're missing the point here. The GT31 makes 2 file types that can be exported directly to KA72, it's what we all do. Either the .bin file from the SD card or the .sbp file from the internal data logger. If your team member hasn't got either of these files, we need to talk him through how to set up/use the GT31 so he does.
As sailquick says the .spd file isn't any use, by Andrew's explanation it only holds the 14 best max speeds and the 10 best max average speeds. IF he's only got a .spd file then both the internal data logger and the memory card logger are turned off.
They need to be turned on!
There are a few articles how to do this in the "guides" section of the GTC website.