Rig · sacrifice the lead
Fishing. Everything is normal strength except one deliberate 20 cm section of 6 to 15 lb line above the lead. It fishes exactly like the rig it is built on.
Baits. Whole squid, mackerel fillet, crab
The weak link must be the weakest point in the whole setup. If your hooklink or shockleader is lighter, you will lose the rig and the fish instead of the lead.