Wow! I can honestly say I haven't heard of that one before, "searching someone's car". Kevin, I think this is an episode for "Law and Order".
Brendan, you have come up with some creative ways to "test" new applicants. With the "wiping of the feet test", "the leaving the light on test" and "the surprise question test". I must say, oddly enough, I do see where you are going with this, but not for a condo association.
Tony, as mentioned in this post, go over Rules and regulations, especially pets, rentals and parking. Also, if it is a renter make sure to state their is a policy of only 2 persons per room and go over what asecurity deposit covers and when it will be returned.