I sometimes used the PokeRadar, I wasn't the biggest fan of it, mainly because it had to be charged up with steps, and I usually didn't have the patience to run or cycle around everywhere. It was useful though in chaining, although I never really got the hang of it. I think my highest chain was 12 or 14, with a Geodude/Chatot. I'd love to catch a shiny in DPPt, but the chances are I won't if I don't start getting into the habit of using the PokeRadar. Who knows, I might even use it much more in my planned re-run through Sinnoh, than through my previous journies!