Hi,

This year is the second year I will be sailing my Blade. Last year I had to get used to the boat (coming from a Nacra 5.0), adjusting mastrotation, downhaul, getting to know the feeling with daggerboards, etc.

After this year I kind of know what is a very bad setting and whats not, concerning rotation, daggerboards, mainsheet tension, .... but now I want to start fine-tuning that. Next to that I also want to start working on tilting the mast and working with prebend.

All of these settings should affect VMG of the boat. (for example measuring what the change in upwind angle is while tilting the mast and what the change in speed is).

My main question is now, how to measure it (I don't want this thread to be about the settings themselves).
I have a Garmin GPSIII which is old but can record where and how fast we're going and I downloaded GPSAR.
Is anyone familiar with that or does anyone measure this in a different way?

Regards,
Gill