Even with it's conspicuity patches on the wings the Vigilant can be very difficult to spot, in hazy days over the last few weekends 2 pairs of good eyes downwind have had great difficulty spotting a Vigilant turning final.....and thats when you know where to look!
Spotting a Vigilant during a routine lookout can be even more difficult and during an hours sortie out of circuit you may not see another A/C even though all your colleagues are operating in the same upwind area as per SOP's.
One thing all you people crying "piss poor lookout" have to remember is you can only look in one direction a once............and one day you may just be looking in the wrong direction.