I've indoctrinated my wife and son that the best tube is the one that you leave at home. Boardsports and skiing only for us.

As others have said, not from the tower. think about how you'll have the rope get slack and the huge jerk you feel when the tube is dragging in the water and the slack's taken up. No thanks.

I see that you have a direct drive. obviously the pylon is the strongest tow point. But hardly convenient for anyone sitting in the back seat. Maybe that's your excuse? that since you can't have people sitting in the back seat there's just not enough room to have people out and tow a tube.