Originally Posted by
thcrozier
Nothing wrong with string. It works great as an indicator to maintain coordinated flight.
Unless one utilizes said technique in something of higher performance with a plastic windscreen on a 4+ hour flight with maybe just a little ice, in an effort to determine which of the divergent T&B indicators was incorrect.
One may then have to live with the arc thus inscribed in the middle of one’s field of vision (despite efforts to “buff it out”) until said aircraft has been sold.