Hey Carole, I’ve replaced lines before – not difficult- but I’d be happy enough to come and help. Previous advice all good except nylon line stretches more than polyester line and you don’t want stretchy, just like you never want bungie cord for the deck lines. Their purpose is to be able grab the boat firmly in any rescue situation. I installed the reflective line on one of my boats. It seems gimmicky until one dark night you see its reflection while walking around the beach, just before falling over your hauled-out kayak!