I've had a few questions about how the freerace is scored.
For each race we define a 30 minute window. On Saturday these periods were 12:15-12:45pm and 1:45pm-2:15pm.
The KA72 software pulls out the data from the GPS files for these periods, then calculates the total distance travelled in each. From there, it can calculate the average speed during the half hour.
The winner is the sailor with the highest average speed over the 30 minute period. See attached screenshots of the distance travelled by each sailor in the two races. Hope this helps explain the scoring.
I should also mention that Christian sailed very fast but unfortunately his GPS wasnt set up properly (interval set to 0 sec) so it didn't log his data.