In our last session we talked about using the traveler in light air. If a mate can sail in light air, he can sail in anything. To me, medium air is from about 7 to 14 knots. As a starter, the traveler is not the be all to end all. For the traveler to function efficiently you have to have all the other sail trim controls for the main and jib set correctly for the wind speed and point of sail, which in this discussion is closehauled. So you say your not sure what the correct setting are? No problem - just purchase my SAIL TRIM CHART. It will give you the settings for every wind speed and point of sail. There are some parts of the chart that are a bit technical but my book THE SAIL TRIM USERS GUIDE will answer all your questions. Fortunately, you don't have to mess a lot with the traveler in medium wind. You do have to trim the mainsheet (and boom vang) to reduce twist. When you set your main with reduced twist, you will not have to move the traveler car much above the center line to position the boom near the center line. So what is the best trim (shape) and where should the boom be placed in relation to the center line. I don't know because it varies by boat and depends on how much weather helm the driver wants. You have to experiment. The goal of the mainsheet/traveler trimmer is to get a balance between producing the needed power which comes from the correct mainsail (and jib)shape and also have the sail flat enough so you can point as high as possable. Sounds easy but obtaining this balsnce requires some experimentation. It also requires that you use ALL your sail trim controls - just a few won't cut it. Once you learn how to use all of them, sail trim becomes a piece of cake and you can create any shape you want. In the lower end of the medium wind range, your initial traveler car position should be somewhere between 6" to 10" above the center line and you then would use the mainsheet to center the boom. During this adjustment proces the boat driver should let you know when you are getting close to the proper adjustment because he'll feel a nice "bite" from the rudder. How much bite he wants depends on his preference. Once the mainsheet/traveler trimmer gets the controls set properly you can imagine how easy it is for him to dial in the amount of bite the driver wants. Your not guessing at the trim - the driver can actually feel it. Any questions so far? You can see this stuff is pretty simple and hopefully I'm making sense. Next session, I'll talk about the use of the traveler in the mid and upper range of medium wind.