I had a conversation with the chief engineer at Seakeeper a couple of months ago. My question was this (and a very large concern to me) If I was out at sea, and my boat was knocked down from a broadside rouge wave, would the Seakeeper want to keep the boat down or hep right it? His answer was initially the gyro would try to keep the boat in that attitude, but only briefly. There is a built in shut down built into the unit for vertical loads over a certain G force (which is why they put them amidships back, or try to). Bottom line the Gyro would not pin the boat on it's side. I'm putting both into the new boat, both have advantages, and she is going to spend 80% of her time on the hook, or underway.