I just surfed over a couple of webpages and found that the following designs are ment for iF20 class.
<br>
<br>Nacra Inter 20
<br>Hobie Fox
<br>Ventillo F20
<br>Storm F20
<br>
<br>I know that Cirrus is seriously looking at designing a iF20 although there is not a prototype yet.
<br>
<br>Just to inform you.
<br>
<br>Wouter
<br>
<br><br><br>

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Wouter Hijink
Formula 16 NED 243 (one-off; homebuild)
The Netherlands