Performed really well until the waves got over 6ft
With a quartering roll. We were on the Chesapeake with a 25kt tail wind and driving the waves all night long. Otherwise than that the 4000 did very well in all kinds of wind and waves. I was very surpised with its abilitly in a light boat.My wife really like the auto tack feature, since I could tack and move forware to switch the jib and leave her alone with her book.JimS/V Java