Spatial orientation, navigation, & wave piloting in the Marshall Islands with Hugo Spiers & Joe Genz
https://manoa.hawaii.edu/exploringourfluidearth/physical/navigation-and-transportation/wayfinding-and-navigation
VMG
You can see wind is going NNW, and that is the direct track to my destination. However once I get going fast on foil, I start heading straight South as the energy is better in that direction. What I don't know, is maybe there is a more optimal VMG line, that would be a more direct track to the target