This past week, sailed Pickwick lake and saw three sailboats of same model, 30-32 feet and with very rounded stern. equipped with staysail. Lots of wood and scrolled trim pieces on bow and stern. What is it? Also spotted a narrow sailboat 24-26 ft. which obviously had a mast that rotated in the step. Mast shaped like an airfoil. Also had a boom of some kind located on the bow that looked to be extendable to 10 feet beyond the bow. What is this unusual craft?