Due to some challenges of steering the boat downwind in a blow, some boats were fitted with elliptical rudders to improve handling. These rudders were typically fabricated by Moore. A newer non-class, deeper elliptical foil by Foss Foils in Newport, California was created for pure offshore ocean racing which garnered measurable stability on S/V Kato in the 2016 Single Handed Transpac (winner), and on S/V Concussion with her 2nd place finish in Lauderdale to Key West. The Foss Foil has more wetted surface area and weighs over twice as much as the original foil, which tends to cancel out any penalty by ratings review.