Last month we purchased one of your Supreme model anchors. We were about to leave for the Great Barrier and, because of time restrictions, had to settle for a 60lb when I would have thought our requirements were for an 80lb.
We were caught out at Wangaparpara in what I would call a cyclone. It caught us off guard. We had a lee shore, a short scope, in poor holding with only 2 meters under the keel. We had no time to put down a second anchor.
During the next two days we experienced extreme gusts coming off the hills with swell entering the harbour. That evening there was 95 knots gusts recorded at Channel Island. Our boat is 48 foot, and has plenty of windage. She sails on her anchor. We would sail up, go broadside and then get laid over with the gusts and swell beam on. Your anchor did not budge. The first night I sat and anchor watched, but the second night I was more confident and I slept.
When we finally up anchored I noticed that my brand new snubbing hook was bent and the anchor roller damaged.
That night many boats dragged their moorings and ended up on the beach.