Sailing with friends and clients the most often ask question I get is "how do I trim my jib". That's not surprising because there are more variables in setting it correctly than there are with the mainsail, but armed with a few quick basics you can quickly take the mystery out of it. Whether racing or cruising you will enjoy sailing more with a well trimmed sail and it is important; both for performance and for the longevity of your sail.
To start you need to understand that any good sail designer has to work with the rig parameters of your boat. The spreader locations, lengths, and sheeting angle are fixed so the designer will develop a sail shape that will work with your boat. Read on: