Re: Top Bar bait hives
I'd go with large. When I'm supplying swarms to top bar guys I only give them the small swarms now.
When I used to give them big swarms it would almost invariably move on within a few days, my feeling is they consider the TBH too small, or it may be the shape I don't know. A small swarm though will stay put.
Going with a "mini" TBH would exacerbate this problem.
My humble opinion only!
44 years, been commercial, outfits up to 4000 hives, now 120 hives and 200 nucs as a hobby, selling bees. T (mostly).