My main concern was the fouling on the two stern drives and whether the Ultrasonic System would help these, but I took the recommendation to install two transducers and can say that the drives were considerably better than they were previously after 6 months in the water.
The hull was incredibly clean, just some growth around the sides which I was told to expect. This would account for the fact that the boat had not lost any significant performance.
I only repainted the water line while the boat was out to give a fresh look and my wife is very happy with not having as much work to do with our annual hull work. Normally I would expect to anti foul the hull approximately every 10 to 11 months and lift in between for a power wash. I intend now to keep the boat in the water continuously for the 10 to 11 months and then only refresh the waterline and any other worn areas as required.
What a great product!