We might be breaking barriers here. If Yoda hid when the twins were born, maybe it wasn't hiding but actually he was merely saving Luke's life. Luke said Dagobah was familiar, maybe he wasn't born there but lived there for a brief period of time (long enough to remember of course). Also, separation of the twins is PERFECT. I don't know about everyone else but I feel it would be harder for the dark side to sense the actual location if they are both apart. I dunno, maybe I am talking out of my ass but it seems reasonable. Also, after the Dark Side senses Luke's actual presence on Dagobah, OB1 takes Luke leaves to either Alderaan or Tatooine. If Tatooine, he gather's Owen and Beru and fly to Tatooine where OB1 hides and Beru and Owen start a new life, or OB1 just flies to Tatooine where Owen and Beru already live and use the "leave the baby on the doorstep" type of deal. What do you guys think?