The equipment that we use is nearly "One-Design" but we are not strict about the equipment used. The recommended equipment is: a 11 1/2' board of about 240 liters of volume and a sail of up to 7.5 square meters. The Mistral IMCO sailboard (previously used in the Olympics) is the standard but other suitable craft are OK. Starting in the 1998 season many of us began sailing on Mistral Superlight II boards equipped with Windwing 7.5 sq. meter sails. The Superlight II is almost identically the Mistral Equipe II so Equipe II boards can also do well in our group activities.
By 2012, the Windwing and IMCO sails had become pretty shabby and we have made a mass purchase of Kona One 7.4 sails. These sails are much flatter than the IMCO 7.5 so are not as good in light or moderate wind, therefor we have decided to forbid the further use of the IMCO sails.
The Kona sails have no camber inducers. The Kona 7.4 uses a 460 mast.
The original Mistral Superlight craft are quite competitive in this fleet, often beating all IMCOs and most Superlight IIs in winds less than 12 mph.
Photos of Kona sails follow:
Click here for a rigging guide for the Kona One
Clike here for tuning guide for Kona One
Ryan Park Lagoon in Foster City
Mark Zimmer, Kona 7.4