Excellent! Carl has again grasped the essentials: I would say that there are 4 main multihull types and one bicycle monohull type.
1. Catri and the older French tris used foil-assisted lifting on their forward system, never intending to fly completely out of the water.
2. L'Hydroptere has very large surface-piercing foils angled at about 45 degrees between the hulls and flies at speed quite high above the water: thus crashing may hurt.
3. Sam Bradfield's new inverted T-foil design will be racing to the Bahamas soon, with Rave sailors manning the side: these all fly above the water. Some claim that this design never pitchpoles but I have watched it happen! When they collect weeds they all stop.
4. The monohull Moths fly whether on outrigger-type surface-piercing foils or bicycle T foils, and cannot be retracted out of the water.
5. My rigs and the Spitfire concept boats all fly: in less air the foils can be lifted out of the water for efficient sailing -(mine lift easily).

(Its a LONG way from here to Labrador and the land of the Newfies to go to test foilers in salty ice water).