Ian, if you must follow a model, have a look at the stats from
here and what the FAA studied in pilot visual acquisition of traffic.
Take note of the figures resulting in reduced radio congestion and enhanced traffic acquisition...what we are all about in dirt road class G. Less time on the radio and more time acquiring targets...the technolgy that enhances this is worth a hundred years of statistical studies into accidents.
These devices will enable pilots to acquire the aircraft and verify the identity of any intruder within the general area either before, or in accordance with, a controller-issued traffic advisory or alert.
A13% increase in positive sighting reports with a corresponding decrease to near zero (2%) of a negative sighting report as opposed to 18% without a CDTI.