The only time I was able to get my Morgan 33 O.I. to heave to properly I had an 18-inch sea anchor deployed from the stern cleat, which brought the boat to a dead stop in 35 mph winds off Point Look, MD in Chesapeake Bay. The waves at the time were probably about 6 feet, I was bone tired and needed a break, so I decided to heave to. I did everything by the book, but the boat continued to slide forward at .2 to .5 knots. When I deployed the sea anchor, the boat stopped all forward motion, a big slick developed on the port side, the waves began to crumble about 50 feet from the boat, and other than the swells, it was almost like resting in calm seas. It was a really neat experience when everything I read in the Lynn and Larry Pardy book came together and for the first time in five hours I felt comfortable. I haven't had the opportunity to try this offshore, but I'm fairly confident it would work equally as well there.