Maugan,

You haven't experienced those things for a couple of reasons. Mainly, your H17 wings are much smaller than the TheMightyHobie18 formula or SX wings and mount differently. They do not stick out as far from the hull, nor do they have the profile of the TheMightyHobie18 wings. Further, the considerably smaller area of the seats, means that you are less likely to feel them spinning the boat off the wind. As for putting the whole hull under water, that's not at all uncommon, especially in any sort of chop. Without wings, the boat can more easily slice through. When the wing supports go under, you can really feel the boat slow down.

Righting the boat with wings is also more difficult than without. I've had a Hobie 18 w/o wings and it was far easier to right than my SX. Also, on the NC coast, and in other areas with strong tidal currents, the wings act just like sea anchors when you're flipped over. So beware if the tide is going out.