I do most a mine by feel, pull that bag out an rearrange the meat an feel it. Then when I'm close I check with a therm, then inta roasters er pans ta keep it warm.
A microwave will do to, but ya gotta be real carefull, ya wanna heat it, not cook it. Use the defrost cycle on smaller batch's.
Frozen takes longer then thawed, so thaw it before hand if ya can. Otherwise just plan a bit longer. I save them golden juices an defat, add back in at time of warmin, otherwise the apple cider sure does work good!
9th sense, is that like a cat with 9 lives?