This goal has the following fine print specified by grayson:
This goal is part of "SURF: revel in water."
The point is to track how many windsurfing and sup-surfing sessions I manage in a year. This will also help me see how late / early in the year I can still get out there, despite the cold. Possibly I'll use this data to spur rewards (such as "I can buy a new sail after X sessions").