Uncover the secrets to sailing fast while remaining in control. This book is here to help with the demanding and crucial role of mainsail trimming. Every effort has been made to simplify the subject and explain everything that you need to know without blinding you with science. Sailing terminology has been reined-in as much as possible, and only information relating to mainsail trim has been included. High quality photographs and illustrations are used throughout to simplify this complex subject by showing the sail shapes needed to make the boat go fast and stay under control. With only one sail being dealt with, the subject is simplified and sailing is made more accessible to the newcomer. AUTHOR: Felix Marks is a successful racing and experienced cruising sailor in Australia and the UK. Also author of the popular sailing guide Jib Trimming. 41 colour photos, 23 diagrams