Break Away Sinker Loops?

[PaulNreel]

Rich, the end of my rig has a perfection loop where the sinker gets attached. Separate I make a loop of a lighter line with a simple overhead knot and connect it to the perfection loop then to the sinker. This becomes the weak link and will break before the leader. I have seen people use a rubber band instead of the loop, I always wondered if it was strong enough and decide to use a mono loop. How ironic that we sacrifice the most expensive component of the rig and protect the cheapest.