Bermuda sailing sisters Matilda and Flo Nicholls won their respective classes at the Junior Regatta Week at Aldenburgh Yacht Club in England over the weekend.Matlida, nine, was competing in the Optimist Fleet and won the morning series before finishing a close second in the afternoon series.Her younger sister Flo, eight, finished undefeated throughout her Regatta Fleet, capturing nine consecutive first place finishes.Elsewhere, Chase Cooper, 12, competed at the Long Island Sound Optimist Championships at the Larchment Yacht Club, placing third overall and second in his age group.