Downwind carving is awesome with the standard Slingshot Hoverglide Infinity 76 (1534 cm2) wing in lighter winds.

The Time Code 68 (1101cm2) wing comes into its own in 15-30 knot winds, it turns faster and feels more secure when powered up accelerating down a wave or swell.

Early days but the downwind carving technique I've worked out so far;
I foil across the swell to build speed then carve down the swell - you can really load the Time Code wing up into a sharp turn, both feet in the straps. Dead downwind the sail loses power until I'm foiling 25m to 50m using only the power of the swell - an exhilarating feeling
Before the foil starts to drop as I lose swell power (and balance), I carve back across the next swell to regain speed for the next downwind carve.
50 or more of these carving cycles in a mile downwinder, in almost complete silence. Tons of fun - like powder snowboarding

I've only tried so far in 1-2m windswells with a tiny groundswell - waiting for larger swells. I think it'll be possible to foil carve forever without sail power with a decent groundswell - like the downwinder prone and SUP foilers, but with the big advantage of easily getting back upwind to do it again and again.

15-20 knots SW, 50km session, modified Isonic 121, Blacktip 5m