hi there,
 
i don't understand the need to fill up the space left as a result of putting
in 9 frames instead of 10 by using a follower board.  if the concern is
burr comb to the sides of the hive caused by the extra space, then why not
use 10 frames to fill up the space?  you'd get more honey, less burr comb
and more brood.  Correct?
 
i never did understand the 9 vs 10 frame principal..   can someone convince
me why it is better?
 
thanks
john