"Alan Gerber" wrote in message
...

I don't know. How do you mean "should" he as what's best, or as
what's standard procedure? I've only experienced having them wait to
terminate until I had the field in sight.


Instructing VFR aircraft on flight following to advise when they have the
field in sight is not standard procedure and does not have any useful
purpose.



When *is* "time to switch"? Again, I had thought - by inferring from how
I've been handled - that it's time to switch when I actually have the
field in sight.


It's time to switch at a point that will allow the aircraft to contact the
tower before entering Class D airspace.



Because if I'm having trouble spotting the field, either I need help
because it's hard to find, or I'm just not in the right place (i.e.,
"lost"), and need help finding it because I'm lost.


How is keeping flight following, by itself, beneficial in those cases?