I just got a new-to-me GoFoil setup, after riding Slingshot for a couple years. I've only had 1 session on each wing.
Iwa is about same size as SS Infinity 76, but seems to have more power/lift. It was a handful to keep it in the water, needed a lot of front foot pressure. (up to shoulder high waves, I am 73kg). Was lots of fun, but kinda hanging on survival foiling vs loose like a goose in a caboose.
Kai next day, same size surf, was perfect...with less lift, it was a lot more playful for making turns. This is with smaller stab too. The kai is about same size as my SS H2, though lower aspect and wider chord, rides fairly similar, maybe a little more lift and less glide.
Maliko next day on sup, able to ride the tiniest of swells, pump along in near nothing....what a trip.
Mega fun ... frothing out over the lamest surf ever, gotta love this foil nonsense.

