I have Zar on my Curlew and while I have not used it on white water, I have beat that boat around the past two years and it's just now showing some signs of wear on the bottom. Not damage to the skin, just some marks on the Zar. I think it's time for a new coat or two.

This boat is not babied. We paddle over sandbars, rocks, tree limbs, ect. Lots of chances to do damage and so far nothing. Just now showing a few marks on the finish. I am very impressed with how well ZAR has held up.