The text of the ISAF bulletin includes...

>>Multihull Open – Hobie 16 with spinnaker or Sirena SL 16

Current Position:

The Hobie 16 is currently the only Equipment that can be used in the Multihull Open
discipline.<<

The Hobie 16 is already selected for the 2006 and 2007 World events, so it is far in the future before the SL16 actually gets used.

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Matt Miller
Hobie Cat Company