Too early to tell but from memory the Cott shark from 11 years ago was 4-4.5 metres, estimates from a pair of shredded speedos is suggesting that the current Cott shark is only 3m.
Dunno how they can even remotely gauge size from a shredded pair of stretchy sluggos but time (and a body) may tell.

If it is the same shark then at least one guy will very much regret that 11yrs ago it wasn't knocked off.
Also from (patchy

) memory, I recall, in the episode 11 yrs ago, that it took days of to-ing and fro-ing but a decision was evetualy handed down to hunt and knock off the Cott shark. All meaningless as the shark was LONG gone by then.