I had really...
...good luck cleaning dirty, slimy, and crusty running rigging with a 1500 psi power washer. I laid the lines out on my driveway and with the nozzle set for a spray about 4 inches wide, I blasted all the crap and dirt off these lines quickly and easily. Much to my surprise, the clean lines were also much more flexible. Worked nicely for me.I've also had good luck in running the rigging back up the mast by either using a messenger line (installed when I took the line off), or by simply sewing a few stitches of the end of one line to end of the new line with whipping thread, covering the joint with vinyl tape, and hauling away. The key is not making the joint stiff or too large to pass over the masthead sheave.