edwin lake wrote:It also solved the problem of removable frames, which are required in NC to be legal.
movable
frames aren't required, just movable comb. if the combs are relatively straight, they can be removed from top bar hives for inspection in a fairly simple fashion, no frames required. just need to sever the connections to the wall of the hive first and avoid rotating the comb about its weakest axis: the top bar.
of course, ensuring straight combs is easier said than done. instead of adopting one of the more harmful of beekeeping innovations (movable frames), I recommend a program of benign criminality: thoughtful camouflaging of unregistered hives. not nearly as difficult as one might think. just remember that loose lips sink ships and honey bribes can be very effective.