MapKit: hide title on callout OR any way to detect before annotation is selected

Hi,
I am using a rich, detailed view to show information in an MKAnnotationView's detailAccessoryView. As such, I don't need to use the 'title' or 'subtitle' fields that come with the callout view. However, I also want to show the 'title' under the MKMarkerAnnotationView on the map. Unfortunately it looks like the same MKAnnotation's 'title' property is used for both the marker's name on the map, as well as in the callout view. So I'm trying to figure out if there's any way to hide the 'title' in just the callout view. One thing I was considering was hiding the 'title' when an annotationView is selected, but doing this in 'didSelectAnnotationView' is too late to take affect for the callout view, and there doesn't seem to be an option for a delegate call like 'willSelectAnnotationView'. Is there any other way to figure out just before the annotation is selected?

MapKit: hide title on callout OR any way to detect before annotation is selected
 
 
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