Probably. But if the “civilians” are heading south, chances are that Hamas will blend in with them and take the hostages with them. If they’re still alive.
It’s as simple as that.
Oh wait — maybe there are some hamas-sniffing dogs (they’re the ones that have had a shower within the past month).
If there aren’t special forces already in place south of Wadi Gaza, they’re doing it wrong. And I very much doubt they’re doing it wrong.