Installed a Strong track/slide system three years ago and have been cruising full time in the Caribbean since then. It was easy to install and my heavy, full battened main can be raised by hand. I just have to tension with the winch.
I'm a 70+ yo singlehanding a Passport 40 with a 56 ft mast.
Removed and inspected the plastic track six months ago and did not see any UV degradation.