|     This is really not a realistic assessment.  A rigid wing is capable of driving something much faster than a single surface sail....that is indisputable.  
| It's a perfect match for foiling craft and
wheeled craft, not so much ordinary sailboats, where it is power that is needed, not the ability to still develop lift when sailing well in excess of wind speed, which is where the rigid wing will shine.

Do you know how wings work? Just because a sail can drive a fast hull faster does not mean it can ONLY do fast. You do know that to get to fast, you have to go through slow?

How does a sail go faster, but not make power? This is nonsense.

| In boats we do not have the low friction environment to be able to harness the potential of rigid wings effectively.  

This is a nonsensical statement. Or, at least, I am unable to make sense of it.
The sail does not care about the hull speed, only the wing speed, right?

| This really IS a classic example of the kid who thinks applying Indy car technology to a car used as a daily driver is a great idea...........  In ordinary sailing it is OTHER limitations that hold our speed to within certain limits. 

What is your point? That just because one sail configuration can ALSO sail a fast hull, it cannot also sail a slow hull well? That makes no sense.

| Racers resort to huge long hulls, foils, etc to get wave making and friction down.  It simply doesn't apply for most of us.   Under typical sailing conditions, that fabric from the other face of the soft wing sail would serve us better as more sail area.

Says who? Was it not you who says you cannot have a too tall a mast? Not to much sail? Where would you hang that extra sail?