Hi Carl,
So far I find the Hooter works on all points of sail until the wind gets up too high. I have been able to outpoint Hobie 16s and go almost as fast.
I think the trick is you really have to sheet hard and have a lot of luff tension. And then keep the inside telltales jumping a bit on the Hooter.
Usually, I unfurl and leave it out.., and furl when I tack.
Rick