1. The systems used by JRCC to determine a search ares is more or less a good guess only (crap in crap out).
2. Always be in search "mode" on the way to and from a search area
3. It is an equal chance you will find the target outside than inside the area given to the SRU's, do not relax when outside the area...
4. Speed , height, track, spacing, discipline, endurance, sun etc as mentioned is key and training is vital
5. In this particular case they where found outside the given search area given to the SRU's, not unusual as mentioned