The Wave jib kit was never intended as a performance booster, it was designed for sail training, so in that regard... it does what it was intended to do. I gives a crew learning to sail experience with a head sail. Yes you can adjust luff tension on the jib as well. That is simply halyard tension.

The spinnaker on the other hand does work as a performance item, yet again it is small and designed purely as a training item. It is a small asymmetrical with pole.

Both were designed for beginners and for training... not you big experienced guys who are tying to juice up the ride for yourselves.

So, do the Hobie provided sail accessories work? Yes. For what they are intended.