Last year I was able to reverse boxes 3 times early in the Spring. I had bees busting in the hive. This was planned to build them up strong to make a 50/50 split. With the weather this year, I have only reversed one time. With the people that do reverse boxes, is it too late to reverse when the flow has started? Its not a full flow yet, but it won't be long. I was told last year that reversing could possibly prevent a swarm for near 30 days. Seemed to work for me. None of my bees swarmed and I ended up with two strong hives.
Mark
Mark