I finally managed to get my little 1982 Rhodes Robin home from the club I used to belong to. In cleaning out the poor thing, I saved every piece of line but one tatty, moldy, crinkled piece of 1/8" braid about 21" long that was used to tie some gear in the boat. And I felt weird dropping it into the trash.
In other news, I soaked all my boat's moldy, dirty, original (1974) Sampson line in a 5-gallon bucket with laundry detergent (with fabric softener!). The soap bottle distinctly said 'Not for use with acrylic.' Oops. After a few hours, with a little scrubbing, they all came about 90% clean.
They're in the To-Be-Repurposed basket in the attic right now. I need help.