Overrigged gives no speed even if the ice was so hard tand fast that every board had splippery problems. (I had been much faster with 4.6 than todays 7.3.) In gybing the front blades could slip. Monkies and tacks or gybing on the ruff part of the lake were easier . Boards: Johan, Robban, Mattias and Nathalie. Wings: Bengt, Agge, Torgny and some more.