“Windsurfers for all intensive purposes do not adjust downhaul, outhaul, or "sheet" tension.”

That statement without “conditions” is totally false…granted the typical experienced windsurfer does not adjust downhaul, outhaul, or “sheet tension on the fly” (some racers do) …but downhaul/outhaul/batten/camber tension is very finely tuned “on the beach”

We accentually pick a sail size and fix the sail shape to be optimized for a given range of wind conditions. If the sustained conditions change radically (say10 mph+ over optimal, for example the wind increases from 20 mph to 30 mph) and the sail starts to get uncomfortable, we sail into the beach, or drop the rig (while still out on the water) and make the necessary small adjustments (a ½” of change on downhaul or outhaul makes a huge difference in a high end windsurfer sail..

A windsurfing rig is much more like a fixed wing than a catamaran rig.


Regards,
Bob