Several times this season I have come across a hive that either had a failing queen, had swarmed or had some other issue that left it too weak in my judgement. Too weak maybe to reliably protect the hive against SHB, robbers, or wax moths - but certainly too weak to produce a harvestable honey crop - even though they may have actually contained a good bit of honey at the time.
In several of these instances I have done a paper combine with their next door neighbor, and now 3 weeks or so later all of the combined hives are looking like they will produce bumper crops. Also this has not seemed to make any of the combined hives more likely to swarm - maybe even less.
My hives all sit on long hive stands that hold 5 or 6 hives - so if I had a choice I combined with the weaker of two adjoining healthy hives.
For anyone who doesn't know or isn't clear, a "paper combine" is where you stack one hive on top of another with a sheet of paper (I use paper towels - which I keep on hand anyway) between them. The bees eat through the paper and kill one of the queens thus combining the two into one larger hive. When combining two hives that are next to each other on a hive stand I push the combined hive to a position about halfway between the two original hives so that the foragers don't miss a beat. always provide for some ventilation for the top section. In my experience it always seems that they stick with the better of the two queens.
For me this is likely to be way less work than trying to find a queen, and since I make lots of increase hives every year - including this year - the loss of a queenright unit from my hive count doesn't bother me at all. Just one more of the many reasons to split out plenty of nucleus hives.
In retrospect if I could go back a few weeks in this extremely swarmy season I would do this with all or most of the hives that I have which have swarmed - it's quick and easy and seems to have substantially increased my future (fingers crossed) honey crop. Lots of times when a hive swarms it's chock full of honey, but it won't produce an additional harvestable surplus. And in any event it's way better than letting a hive secumb to robbers or hive beetles.