Good for single handed sailing.
Easy main sheet trimming (wing is semi balanced).
Easy trimming of wing's camber.
Mast is in its original location.
The boat is perfectly balanced.
No need for extra sails (Genoa, Spinnaker).
Clear deck. No deck fittings.
No shrouds, no chain plates, no winches.
Full automation of the wing is simple and inexpensive.