I’m giving a thumbs up to WD40. I’ve tried all the solutions mentioned in this thread - wetting the line at bedtime, soaking in Downy, wrapping with a towel, using a piece of hose to wrap the line...nothing worked in a real wind. WD40 was the ticket. Last night, the wind was howling and the lines were screaming. A little WD40 where the line passes along the chock....Instant silence. I wish I had known about this years ago....all those sleepless nights could have been avoided. Most of my lines are New England rope, and they creak, but so does the one that I've had for over eight years which is highly superior to the NE rope. I wish I knew what brand that line is - it never gets stiff and it's fat, strong and soft. It was on the boat when I bought her, and it's the best line I have. I put a little WD40 on that one, and it became silent too.