New RBTA - How do I get him to stick?

[new but handy]

Mine went into the back corner of my tank and hasn't moved for 2 months. It sort of sucks because I can't see it, or feed it. I figured if I didn't feed it it would move but no such luck. My lta decided to move on fri night. It moved into the other corner from the bta. Now I have two nems that I can't see or feed. I recently added a new skimmer and I had a lot of bubbles flowing into the display. I'm fairly sure this is why the lta moved. The bubbles flowed straight onto it. Now that I haved fixed the bubble problem my next mission is to get the nems where I want them. Or as close as they will allow me to.
Oh the lta stayed where I put it for 3-4 months before it's recent move.