If you want to trim your sail properly, there is usually no getting round some kind of "tool", especially with larger freeride or freerace sails, the trimming forces are so great that you can no longer grab the rope with your bare hand. On the one hand there is no grip, on the other hand the ropes cut in unpleasantly.
Suitable trimming aids include sticks, tubes, screwdrivers, an extension or the harness hook - there's something in every surfer's car. Various brands also have Trim handles with clamps in their range. In some cases, it is sufficient to simply wrap the rope around the trim aid several times, but this often doesn't hold, especially with harness hooks with a wide plate. On the other hand, we can only advise against "real" knots, as the tensile forces often cause them to tighten bombproof. Then the sail is well trimmed, but you waste a lot of time fiddling with the rope again.
The solution is this life hack that many windsurfers already know: A loop in the rope that is quick to make, holds well and can be released just as quickly. Manuel shows the most important steps in the video above:
More windsurfing lifehacks: