Attach and actor to an actor using a 'rope' or similar.

Thanks again, I think I’m getting there! I’ve managed to get the physics constraint working where I can pick up the tank with the helicopter. The only problem I’m encountering at the moment really is when I come to a stop with the helicopter the tank flies around like a pendulum (which I guess is sorta realistic), but I’d like it to just return to it’s original state (directly below the helicopter) without the excess swinging. Another problem is that the constraint will lock it’s length in at the original distance between the tank and helicopter when I first ‘connect’ them, so if I try to move the helicopter further to the ground (and put some ‘slack’ on the ‘rope’ so to speak) it’ll just try to force the tank through the ground.

I’m going to play with the settings and do what research I can, but do you know if there’s a proper way to rectify these issues?