I just left nature to take it's course with the trap-out cells. Between late swarms I have collected, and the trap-out and cut-out, I probably have a half dozen colonies that are not huge, and I am allowing to "prove themselves". Any where it is obvious they cannot survive on their own will get combined, either together, or with another colony that could use the boost.
Take your "losses" in the fall, was something I always heard and read, but didn't come to better appreciate until later in my beekeeping endeavors.