that's easy, actually pick up and look at stuff and don't follow them right away, and also take different paths then where they went to get to their next destination, then follow after looking at something. The most awkward thing you can do is stare, or watch them. Make watching where they go a secondary action. Actually look at shit, read the label and kinda do like an "ahh that's what this product is" type of thing. They're oblivious especially when they have their own agenda. If they stop moving, while you're following, don't STOP keep going and circle back later, or find somewhere further up and then slowly work your way back. it's not as difficult as you think. i got this really hot chick at a walmart with her friend, at least twice. If I could find the hard drive it's on I'd show you some of the pics.