Some people are using the W1000 and W800 for winging and seem to love them.  There is also the Moses 633 (Slingshot Apollo), which wind foilers seem to like.  From what I've heard the 633 has good lift and is faster than the 790 and more maneuverable.

I'm not sure what masts or fuselages would work with the W1000 and W800, outside of the race ones.