Review on 🚤 Stretchable PWC Bungee Dock Line Set for Kayak, Boat, Marine – Two-Pack (4ft & 6ft) with Foam Float – Ideal for Jet Ski, SeaDoo, Yamaha WaveRunner, Kayak, Pontoon (Green/Blue) by Mike Ken

Works well, great price. With other brands, however, the "rubber bungee" is permanently attached to the rope in such a way that it always acts like a bungee. The rope between the two "knots" must remain loose. The knots are there to keep the extra rope loose so the elastic can act like a bungee. When the knots come loose, all you have is a rope with a piece of rubber in it. No stretch, just rope. It takes 10 minutes per rope to tie a knot at one end, slide the rope and tie it so there is extra rope, and then tie another knot at the end of the bungee. It's tedious, but they work good if they are tied properly. The main units use best practice, no knots. The description says "Sets of Two (4ft & 6ft)", it looks like there should be 2 "Sets" of 4 and 6, making 4 in total ropes means. A bit obscure and hidden.