I'll chime in here as well and say that stuff works awesome. A can of it came on my new to me boat when I bought her 2 years ago and just last month when I took her out for the first sail, I sprayed this on the sail track and all the sail slides. Even now a month later when I release that halyard to drop the main - it falls down as if it isn't even connected to the mast. That coupled with my Dutchman system makes dropping the main a pleasure. On my friends boat he has to literally pull the main down when he releases the halyard. So this stuff is def great to get.