If you have a Hallberg Rassy, where the wires to the mast are led through a metal pipe up through ruffled, then you can use this trick!
For, at first, I saw, that when I turned, my headsail sheet could catch the edge of the pipe and get stuck!
That’s why I just tied a string around the tube and up to the fitting on the portside of the mast, so that the joints can not come down to the pipe edge – and it works! 🙂