does it have to? I want to sail in a huge tidal bay with sandbars. 2 hours on either side of the high tide would be sailable easily but stretching past that point would be a risk IMO. Is it possible with a Nacra to sail without the boards all the way down (or even without them all together a la a hobie cat)? Just curious.

The nice part about being a pessimist is that you are constantly being either proven right or pleasantly surprised. - George Will
"It's not that liberals aren't smart, it's just that so much of what they know isn't so" -Ronald Reagan