2 ways to do it... 1. tie your leader to your swivel and then attach to copper with haywire twist. 2. tie your swivel on to your copper with haywire twist. typically when you tie a palomar knot you pass the swivel through the loop... instead of that pass the opposite end through the loop. you will end up with the same out come. You may have to try it to understand what i mean. If done right your leader will never be in danger while heating your shrink tubing. Your not heating the swivel and your not covering the swivel with shrink tubing. your just trying to cover the haywire twist.