Setting a radius for follow me

I want to use the Windows Mission Planner to set a distance and altitude for follow me mode but all I have been able to to is straight overhead. How do I set a distance as in the android version of Mission Planner? Or does anybody know of an android tablet that has a accurate GPS? The one I have jumps all over the place so camera is never pointing right. What I would really like is to be able to set the quad where I want it to follow me in loiter mode then have it maintain that same distance direction and heading as I move around automatically.