I used a pre-made from Defender
60' is plenty to lead back to the cockpit even when stowed buy attaching the shackle to the lifelines or the boom end.By the way these are great quality. I like the line and the shackle. You could hardly make your own for less.Sorry I haven't had a chance to check the gas tank manufacturer. I haven't been to the boat in THREE WEEKS! I'm dyin'.