I plan on building some medium nucs to use as swarm traps. I use a single hole in the front of mine. My question is: do you think I should have a screen bottom board? Would this better help to attract? The SBB saves me time and wood. I plan on including 3 new foundation frames and 2 with used comb in each nuc and a Mann Lake swarm lurer. Thoughts.
A medium nuc is not large enough to hold an average of large swarm, they will most likely opt for something different or abscond if caught. I've had it happen. If using medium nuc boxes you'll need to double up to make a space slightly larger than a single deep.
The rest of you plan is okay.