A unique sail designTesting the Rig One – a sail for every wind?

Surf Testteam

 · 22.08.2026

With a short boom and without camber, the sail is particularly easy to handle.
Photo: Stephan Gölnitz
Rig One: an extraordinary sailing concept put to the test in surf conditions.
The Rig One is designed to cover an extremely wide wind range: ideally, you’d buy just one of the three sizes and use it for all your sailing – always. We’ve tested the ‘Medium’ size extensively.

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Whether on Lake Garda or Lake Neusiedl, there was a great deal of interest in this test sail. After circling it twice, the question inevitably arises: “Is this another Cut Away?” – it certainly bears a striking resemblance. But the Rig One also features a very short boom, as on the ART Twister, removable mini-camber sections, as on the Neil-Pryde MPR, and the adjustable tack strap found on many racing sails – only here, there are two of them. Designer John Chao offers three sail sizes, and orders are also being taken via a Kickstarter campaign. John told us more about the background in an interview: What lies behind the unusual “RigOne” – an interview with designer John Chao

Anyone holding the Rig One in their hands for the first time is likely to be impressed. High-quality fabric, seven battens, several mini-battens, reinforcements at all critical points, a rubber strip running high up along the lower luff – no expense has been spared on quality. The cambers are neatly fitted and sewn in, and the seams are flawless. The only flaw: when tightened to the required tension, the lower tack straps not only shift the sail’s centre of pressure steadily forwards but also create noticeable creases in the foot, which are unlikely to look any better over time. Visually and to the touch, however: full marks.

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Let yourself glide passively rather than pumping

Our first test run was carried out on a 430 RDM carbon mast (GA RDM 80). Even with both camber bands in place, the sail exhibits comparatively little profile – even with very little luff tension. Switching to a 460 mast (NeilPryde X 100) noticeably changes the sail. The profile becomes visibly deeper, the sail feels more inherently stable – and as a result, even more controllable overall. The slightly unsettled feeling on the 430 gives way to a precise ride, whilst still retaining the Topps’ characteristic, gentle springiness under excess pressure. You position the sail towards the front with your arms outstretched – like a wave sail – and let yourself be drawn into the glide in a relaxed manner. Active pumping yields only a slight improvement.

With a boom length of just 1.82 metres, the sail appears surprisingly small and light. Our comparison sail, the NeilPryde Speedster Evo 7.0, is just under 30 centimetres longer, measured directly across the boom including the flared leech. With its short boom, pressure point far forward and an elastically opening leech, you shouldn’t expect much backhand power to actively accelerate in very light winds. Anyone hoping to get into a race from a half-planing position by deliberately fanning the sail is likely to be somewhat disappointed.

Relaxed cruising, even on rough seas

However, the sail’s performance is impressive in other ways: the pressure point never moves behind the rear hand. It settles quite stably between the hands and thus remains under control at all times. The wide-spreading top flexes gently to the side, releasing pressure without feeling spongy. The Rig One Medium never felt overpowered during two days of testing, even when there was at times a great deal of pressure. It’s a sail you can still hold with just two fingers, whereas with a classic freeride sail you’d already have to grip it firmly with both hands. The reduced lift, which curbs acceleration in light winds, translates into greater comfort and control in strong winds. In gusts where you’d already have to hold on tightly to the Speedster, you could still cruise relaxed on the Rig One Medium without turning your knuckles white. However, if the rider really pushes the Speedster, it clearly outperforms the Rig One in every wind range. But clocking up nearly 50 km/h on the GPS with minimal effort – that’s impressive too.

​Almost 50 km/h on the GPS with minimal effort – that’s impressive.

Because the mast pocket is as narrow as on a camberless sail, it makes sense simply to leave out the two profile supports. Lo and behold: even in strong winds, we actually preferred the camberless version. The sail still forms a nice profile as soon as the wind fills it. The batten rotation during manoeuvres is really very good, and when hoisting the sail, it offers a noticeable ‘off’ – which makes planing easier in gusty winds. With the spacers fitted correctly, the camber does sit neatly against the mast – but our advice remains: leave them out.

surf’s verdict on the Rig One Medium

The Rig One is not a classic freeride or, indeed, a freerace sail, nor is it a fully-fledged alternative to another, smaller sail. It is a master of relaxation with a particularly wide wind range at the upper end. If you’re just looking for a sail that works from a solid gliding wind right up to well beyond the actual strong-wind limit, without ever becoming a real struggle, you’ve found your partner here. If you want to keep up in mixed wind conditions, you’ll have to expect a noticeable shortfall in performance. But if you simply want to spend hours surfing relaxed on a 7.0-metre sail whilst others are already struggling with theirs – then the Rig One is the perfect choice for you.

STRENGTHS: Features and build quality, very low hold, very wide wind range, pressure point always under control, feels light, easy handling (without camber), very well-balanced in strong gusts
WEAKNESSES: Little extra power from pumping, hardly any lift in lighter winds, mediocre light-wind performance
SPECIAL FEATURES: Recommended exclusively (even in size Large) for RDM masts, extremely short boom, two straps (tack straps) for tensioning the foot of the sail, two removable cambers, no dedicated masts in the range

Technical Specifications for Rig One

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Manufacturer’s specifications

​Small

  • Size: 6.0 square metres
  • Luff: 4.34 m
  • Fork 1.75 m
  • Riders weighing 36–82 kilos
  • Wind 13–39 knots

​Medium

  • Size: 6.7 square metres
  • Luff: 4.66 m
  • Fork 1.80 m
  • Riders weighing 41–91 kilograms
  • Wind 13–30 knots

​Large

  • Size: 8.6 square metres
  • Luff 4.96 m, boom 2.25 m
  • Riders weighing 12–30 kilograms
  • Wind 10–26 knots

Find all the information at windwing.com

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