Why a circular pumping motion with the rig can buy you up to 3 knots of extra wind, and how to know when pumping helps and when it slows you down.
What do you do when the wind drops right at the moment you're flying? The honest answer: you pump — but not just any way, with one very specific, circular motion of the entire rig. This technique can effectively buy you up to 3 knots of extra wind at the low end — the difference between "just barely still airborne" and "back down in the water."
The principle: instead of just holding the sail as you pull it down, you actively push it back into the wind. That keeps pressure in the sail and generates a short burst of extra thrust — like pedaling a bike to get it moving, except here your whole upper body and the rig perform the pumping motion. On the left tack you pump clockwise, on the right tack counterclockwise — a detail that surprises many beginners at first, since they expect the "same" motion to work automatically on both sides.
Timing matters too: right at launch, a short pump sequence of two to three pumps helps — the first builds pressure in the sail, the second lifts the foil. Once you're already flying reliably and up to speed, though, the deep circular pump becomes ineffective; short, fast pumps pay off instead. Pumping the sail stays a windfoil-specific technique here: classic windsurfing has no comparable tool, because there's no foil lift to generate, just sail pressure for propulsion.
Actively pull the sail down while pushing it back into the wind, instead of just holding it. This circular motion keeps pressure in the sail and generates a short burst of extra thrust exactly when you need it.
Clockwise on the left tack, counterclockwise on the right tack. Practice the motion a few times on land before applying it mid-flight — getting the direction backward costs you more energy than it gains.
Getting airborne usually takes two to three pumps: the first builds pressure in the sail, the second lifts the foil out of the water. More isn't usually better here — extra pumps just cost energy without added benefit.
Once you're flying reliably, the deep circular motion becomes ineffective. Switch to short, fast bursts to maintain flight height instead of falling back into the old, slow motion.
Pumping costs energy — use it deliberately during lulls and at launch, not constantly. Pumping nonstop tires you out faster than the wind gain justifies.
Practice the pumping motion first in moderate wind with plenty of open space. Powerful pumping can briefly throw you off balance — enough distance from other water users and obstacles gives you the buffer you need during the learning phase.
Film yourself pumping if you can, or have someone on shore watch you. The rotation direction often feels different in the water than it actually is — an outside view corrects that faster than any self-assessment.
The circular pumping technique can effectively buy you up to 3 knots of extra wind at the low end — often enough to stay airborne through a short lull.
Clockwise on the left tack, counterclockwise on the right tack. Getting the direction backward costs more energy than it gains.
Usually two to three: the first builds sail pressure, the second lifts the foil. More is rarely necessary.
No. Once you're up to speed, the deep circular motion becomes ineffective — short, fast pumps hold flight height better instead.
Windfoil: Tacking and Gybing on the Foil