>I need to requeen a hive and have ordered my new queen. The hive is showing queenless behavior (noisy and somewhat aggressive)
Queenless hives have a distinctive roar at first, but that doesn't usually last.
> and seem to spend a LOT of time on the outside of the hive.
That is probably just the heat.http://www.bushfarms.com/beesfaqs.htm#bearding
> I have two deep supers (two hive bodies, 10 frames) and I need to know where is the best place to put the queen cage.
Assuming they actually are queenless (which is always a bit doubtful) put it where the most bees are.
>There is very little capped brood left, so finding the "center of the broodnest" (which is what all the books say) seems tricky - best advice from experienced beeks?http://www.bushfarms.com/beesmath.htm