Rode a 940mm wing today, side by side with a Spitfire with XL wings. . . . Wind was light, reported as up to 16 knots, and I was using a 7m Enduro. Small lady riding TT was on a 9m FX and going just upwind.
Spitfire felt like I needed more kite, more speed and/or more skill to ride fast and smooth. Felt very loose after the big wings, and even my regular sized kitefoil. It felt like it'd be too fast for actually riding waves too, but I only had 20 minutes on it. It's not the answer to what I want to do, but as I said the owner loves it.
The 940mm wing was a hoot. If you can get out of the water and onto the board, you're already foiling. Lightwind technique for water starting was just to wang the kite back and forth in the sky and build up enough oomph to get out of the water
It was hilarious to be foiling around at what must have been walking speed, watching everyone else zoom past, then sort of noodling back and forth on the swell; you could gybe back and forth on the swell without outrunning it, just gotta keep the kite flying. Change-of-direcdtion-gybes were super easy to do, hardest thing was not overflying the kite cos you really don't need it to complete the gybe, and the foil wasn't fast enough around to catch up to the kite. Downlooping was a must!
Again, wasn't power hungry (7m kite!!!) and honked upwind, just wasn't a speed demon. The wing was probably too stable to be what I consider fun but it was more experiment than anything. I think it'd be good for riding small waves with minimal kite, but would be physically hard work -- needs a bit of body English. A fun experiment though . . . !