Generally my Ratchets start to show signs of failure before the wire will fail, your not looking to maintain your line pitch/slope with the ratchet and mainline wire, that's what your side ties are for. You just go along and tie your mainline off to something anywhere where you have a sag to maintain your slope. My side ties are easily adjustable because you will notice a change when the tubing warms up a 500' roll of tubing is easily a few inches longer at 50° than 0°