As a sailor we are doing one of two things when it comes to sail trim. We are either:
2.7.1 Steering the boat with the sails held constant:
The closest angle from the direction of where the wind is coming from that most sailboats can achieve is about 30-40 degrees. But if your desired destination is more up wind than that, you've got to zig zag (tack) your way up the course. And you've got to make constant changes to the boats heading to account for wind direction changes and gusts. In this scenario, as a sail trimmer you're doing less work - that is unless there are strong gusts. When strong gusts are present, you'll be the one responsible for depowering and repowering the sails. We'll talk about that in the sail twist section to come.
Most of the work is being done by the helmsperson. They are constantly adjusting the helm to keep the boat at 30 degrees off the wind and consequently the telltales flying steady.
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