You do not need to ground stabilize unless you're trying to force correlate. Not to insult your intelligence, but remember to switch to narrow field of view prior to locking. Also be careful if there's other targets close by, the MAVs may lock on to a different target.
As for force correlate, I mainly reserve it for larger targets or SA-9/13s. Since they have high mounted missiles, the centroid tracking logic sometimes has the mav flying right between the missile containers and the vehicle chassis. Happy flying.
