been using it for 3 years. It' s good. But if your boat is fast, you will loose some top end speed (about 3%) and you will need at least 3 coats to cover 9 months in the water. On a positive. little to no growth in 9 months and very easy to sand away. I used a mush harder type of Hempel antifouling before (glide). Faster top end speed no growth with w coats in 9 months but a real pain to remove.
Thanks