Steve,

Windurfer's & their rigs are a completely different scenario to a catamaran & its rig.

1. Massive power to weight differences

2. Massive wetted surface area differences

A windsurfer rig relies on the rigg & sail "springing" with every gust, but the catamarans ( even the lighter designs) need leech pressure & stiff mast sections to harness the energy.

Rolf,

That spinnaker design on the skiff may not work for F16 as the ISAF half measurement still needs to be 75% of the foot & hence you would have a rather large roach on the leech of the kite.?

Marcus