Beware of free samples, they might get you hooked. Ken Langtry gave me a free sample of Dads Tape which I first used to fix our Hot Tub cover, I then used it for repairs on our pool cover (more on that later.Ive also used it to fix our grandchildren's toys, repairs to our boat top and more.
Recently Ken showed me samples of Tarpline's Hippo Swivel Clip Adjustable Shock Cords. Seeing how they worked I knew this would be the answer to our in ground swimming pool cover problems. In the past we used the old style bungee cords. The metal hooks are what caused the holes which required Dads tape. With the clamping ends I could place the Cords in just the right places and then the adjustable feature was the icing on the cake. Id recommend these products to anyone and everyone. They work better than anyBungee Cords or Tape Ive ever used.