We actually had one when Dad first bought his boat. We were not aware of it at the time, and would probably not get one now.
It was the fastest we had gone, we were out in front, in about 22 knots, but alas we were suddenly both in the drink, everybody said it looked really good how the top section seemed to just jump up for a second.
We replaced it with the heavier version and have no worries now. The lighter superwing is not quite tough enough for strong winds, to rely on.
Antony 062.