SkyFerry operated two, SFF and SFG, out of Wellington to Koromiko/Blenheim in the early 90's. They were good for what they were designed for. Not as noisy as the Islander for the driver, you were further forward from the props, and the higher wing loading handled the Cook Strait turbulence better. One thing that could be a little troubling was the tendency when parked on the taxiway at Wellington waiting for take off, the wind coming from astern and gusting upwards of 30 kts, they had a tendency to weathercock into wind no matter where the controls were.