For example, if on a downwind leg the losing boat gybes towards the right side of the course the winning boat will gybe towards the right side of the course as well even though the left side of the course appears to be favored. That way the winning boat is insured against losing the lead due to a wind shift that favors the right side of the course. In fleet racing there will often be boats on both sides of the course, requiring the lead boat to sail on the side that it considers to be fastest.