heres one to try, however theres a risk of seeming creepy. if you know the town well, you should be able to have a fair guess at what sort of place someone is going to, for example that little row of coffee shops by the park. so you ask where the costa is, now at this point, if you read them right, then theyll say that their going towards it now, at that point, start conversation
ive only used it three times when i was DEAD sure they were heading where i thought, and got one #close, and instant date (coffee) and a brush off, LET ME KNOW HOW YOU GET ON!