I found in all the time I spent @ 200' in amber, gusting red conditions, we the crew were constantly restless, looking for anything untoward. Even way offshore where maps weren't needed, we worshipped radar in case we flew over large tankers (and today - god forbid wind farms).
We never flew a straight line for more than a couple of miles, we simply altyered heading just enough to check the arc ahead was clear.
We had to maintain 200' because of our SOP's but if ever in doubt, would always climb to nose bleed height @ 500'.
I would like to make one observation though, based on thousands of SAR hrs offshore - human factors was key. A strong captain and a weak co-pilot were always compensated for by a strong navigator in the back, who monitored the front seat.
Perhaps, just perhaps, in answer to SAS's question it was down to complacency.... I hope it was quick.
