We had this with ronin, i would not advise a system that relies on it, as Phil says it stalls and does not stay put, the last thing you want when you are bouncing down big waves is an unexpected lifting of the stern!!! it actually cost us a pursuit race once as we were dragging the bow while coming up fast on the stern of a laser, we passed them within a second or two of crossing the line but this is a very extreme case, we fixed it soon after that!!!