Say it's a contest - what things would you do to make one hive produce the most honey possible?

Supplement feeding early to start brood build up?
Transfer brood and bees into the hive before the flow starts?
Combine hives before the flow?
2 queen system?
Remove or cage the queen a month or so before the end of the flow?
Not use an excluder?
Extra entrance above the excluder?

You have to keep it from swarming of course, but that isn't the question. Assume you can prevent swarming.

Anybody do this?