Grob, this shows a hint of what the modelling can do to performance. This is a screen cap from last Saturday sailing in 8.2 knots (average is probably lower than that as the light yellow in the track shows just 5 knots in places) with the averages shown for 500m. Sea state was terrible as it blew 50 knots overnight, so this was going to weather in a 2-3 ft slop. Generally the boat appears to sail about 18-20% faster than windspeed uphill and the calculated leeward angles are in the 1.0 to 1.2 deg range. Points well also :-)
RG