I've been in your shoes, working all day then making sure the house (and me) are cleaned up within a half hour for interview after interview in the evenings until I find the right family. It's so exhausting. But it's part of our job.

I do let my dcfamilies know when I'm interviewing because their names and phone #'s are on my resume as references and I give my resume to all families that I interview. I only conduct interviews after work and they usually last 1 to 1 1/2 hours because I talk too much. Unless I can see from the first few minutes that the family is all wrong for me, then I hurry them out. And that doesn't happen very much any more because I've learned to do a very thorough prescreening, but that took a lot of practice and learning. I'm sure when I started out I got too many 'shoppers' and now, as you said, my time is too important to me so I only interview the families I know will be a good fit. from the pre-screening.