A video camera situated between the 28's at the approach end and tower monitor would be cheap, easy and effective final check on arrivals.
and just who would monitor this?
There is already a system in place to monitor the approach, it is the first installed, and was to be used as the pilot for other airports. This system was detailed in the AC thread.
According to the FAA, the system was successful and was going to be implemented at other airports.
The first 'blind spot' found was the AC that tried to land on the taxiway...now this?
It does not appear that the system works, or is ready for distribution