I drill holes in the super and the hive bodies- if I end up with a swiss
cheese stack due to poor pre planning a piece of masking tape is all that is
needed.
In the field I sometimes make a triangular notch with a hand saw again if I
need to close it a piece of masking tape will suffice.
In winter I try to have an upper entrance on all the hives- this wont clog
with dead bees and keeps moisture down.
Some hives propolize this down to one bee size- they know more about what they
want than I do.