Super light wind or 5-7 m/s. It means a big stuff and Formula board time. The sail is "Neil Pryde Racing EVO V 12.0". The fin is Z-Fins ZF-70.
In this video you can see how much speed is needed when Formula board starts planing (approx. 15 km/h). Actually it can a bit earlyer planing, but it depends what weight rig is used. Here i have my biggest rig and this set weights over 10 kg.
