200-300-400 lb Test Monofilament Speargun Shooting Line

My experience with monofilament shooting line over the years has been that it gets shorter (shrinks quickly) after being in the sun and saltwater, which puts more strain on the shooting bungee and release lever. This year I've started buying it in bulk and then leave the line outside in the sunlight for 2-3 days. That way, if I need to replace the line while out on a dive, I can install the new line at the correct length and crimp it in place.