Scanning technique
No, not the small radio type, I'm on about the looking out the window type.
On my way past Filton/Bristol, over Bath, Bristol were giving me a FIS, but kindly advised me of one ahead, about one mile in my eleven o'clock. Did I see him? No. Bristol again advised, that I was now 100 metres (yards, I can't recall). Still didn't see it. Only when he was abeam (I'd estimate 150 metres or more, and slightly lower than me but not much!) did I see him. Of course, he wasn't in contact with Bristol!
So, obviously my scanning technique has taken a dive recently, what is your method, and do you find it effective? (I.e. do they still take you by surprise?)