The only things that matter in this system are:

The CG location of the boat (somewhere to the left of the hulls)
The CB location of the boat (also somewhere to the left of the hulls since the mast in the water contributes to it)
The CG location of the person righting (approximately lower chest)

As soon as the location of the combined CG(boat)+CG(person) is to the right of the CB(boat), the boat will start to rotate clockwise. Moving the combined CG out further will just increase the rotational speed / and counteract the movement of the CB to the right (when the mast clears the water).

The only thing that pulling the line from the top of the hull does is make it easier for the person to hold on to. Makes no difference in righting force or leverage.