Great day with many friends. Had two gps devices. Big difference between coros and motion respectively 65.5 topseed and 68.26 for the motion. Average is higher on the motion too. @ is always very optimistic on the coros but never correct. I only had 43... on the motion but 46 on the coros.. 

Nevertheless the speeds it was a very enjoyable day and great weather, finally! I hope I hope i don't have to wait 3 months before the next session because then it's already winter time ??