While other knots weaken the line over time, the catspawed new uni knot will last for years without any maintenance required.
You will need to learn the new uni knot before attempting this.
This knot is best tightened slowly while paying particular attention to how the line is laying while pulling it up.
You don't want to have any twists in the line or have the line crossing. A bit of practice is required.
To pull it up, put the clip over something fixed, such as a large nail.
Put light tension on the main line and slowly push the loop up to the clip.
This is truly one of the best saltwater fishing knots around and it is really worth taking the time to learn how to tie it properly.