Using a wire leader v/s mono is a bit of chicken and egg.
While a long wire leader will help prevent you getting cut off over jagged terrain in will reduce your strike rate at the same time.
It is a matter of personal preference, I have moved from wire to mono and the likes a long time ago.
I know of people using 5' long wire traces and still getting cut while fishing for large GT's.
Experiment a bit buys, perhaps you may like wire, there is not hard and fast rule here.
While I do not credit a fish with much intelligence, I have been trying to catch a couple of fish in my reef tank using a hook, a clown and a damsel they are killing my corals. I cannot catch them with a net because of the live rock and corals in the tank which provides them with far too many places to hide. And I cannot afford to move the rock and corals as it will disrupt the ecology of the tank.
It is unbelievable how suspicious these guys are of a baited hook even though I have baited the hook with the food I feed them daily, so far I have tried for two days, to no avail, hope I am successful today. They seem to be very wary of the metal hook I can see through the tank glass.