Found a new thing. Glow in the dark rope, in a review in the new issue of "Sailing" magazine. It's nylon and supposedly the glow in the dark feature is in the fiber, not a coating, so should be durable. Seeing that it's nylon it's not the ideal for perimeter lines, but maybe for a painter? And might be the ideal for a tow line used at night. It's from Pelican ropes at: www.pelicanrope.com

Bill H.