There’s one rule in shark fishing that beats all the others – trace length.
If you’re serious about hooking big sharks, your leader needs to be long enough to do its job.
Rig length should be at least as long as the shark you’re chasing – and preferably longer.
When a shark hits the bait it rolls, twists, and goes absolutely nuts in the surf. If the trace is too short, all those sharp teeth have a straight path to your mainline – and that’s game over.
A proper long stainless steel leader keeps the dangerous business end well clear of your line, protects you from bite-offs, and lets you drag a shark through heavy Aussie surf with confidence instead of luck.
That same length consideration also determines whether a shark rig can be cast or needs to be deployed.
Castable vs non-castable shark rigs
The difference between castable and non-castable shark rigs isn’t mechanical — it’s practical.
Castable shark rigs are typically around 1–2 metres long, which allows them to be cast safely and repeatedly. Non-castable shark rigs are usually longer and built from heavier materials, as they’re intended for larger sharks and situations where casting isn’t practical or safe.
Because of their length and heavier construction, non-castable rigs are deployed rather than cast — commonly using a drone, paddling the rig out, or placing it beyond the breakers at low tide.
While the purpose is the same, non-castable rigs are scaled up to handle bigger sharks, heavier loads, and longer fights.