Because of back injuries I am thinking about using longer hives that could
be worked like a top bar hive.  I would use regular medium size frames and
foundation.  I am not that concerned with maximum production but will it
work?  Could a single story extended super with 20 instead of the usual 10
frames work?  Could bees overwinter in it?  Anyone have experience with this
type of hive?  Would one race of bee work better than another in this
system?