It is actually quite simple to avoid such 2kt wind holes.
The wind is divided in a grid like a chessboard, if you draw a square using four windarrows as corners and divide that by two you can see where you must, or must not, be.
See attachment (name of skipper striked through to protect the innocent grin), had this particular skipper stayed north just above the line he would not be slowed down so much wink )

Attached Files
vorg2.jpg (285 downloads)