Ex Marina, you could be right. It's a few years since I used the radar in anger but I was pretty sure that how I managed it. The Search functions in my experience are too complex, probably for the reasons you describe and I do remember a few times realising we had no return on a target that was definitely there and realising the copilot had selected a search mode. A quick switch to WX mode and sudenly the target is a nice big red blob.