"Pretty soon," Tom answered.  "You might as well get into the dinghy and practise, as those girls are doing."  He nodded towards some small boats out on the lake, in which fair maidens, apparently at the mercy of wind and tide, were endeavouring to use large umbrellas as sails, with varying success.  Small boys in boats hovered near, cheering and jeering their efforts in a manner which filled the umbrella-maidens with embarrassment and wrath.  Their threats of vengeance floated across to the onlookers.