They need to do two things to a hacked turret.
Hacked turrets need to look friendly to the enemy at all times. (So not red) … I mean initially splash damage was like “oh you get to fool the enemy thinking that it is there turret that is in that spot until the last minute.” … or you can hold fire and not fire until the enemy ignores your turret and runs past you. …
The thing is… WHO ARE YOU TRYING TO FOOL??? With a turret that screams HELLO I LOOK LIKE AN ENEMY TURRET!!!
The operative who wants to take control of a turret should have better detection of where the turret is on the map.
The turret should be as visible to the Operative as satchel charges are to soldiers, when hacked and controlled, so the Operative doesn’t have to spend hours upon end trying to find the turret on the screen.