I'm a newbee and use the follower board.
I too, cut out a space to add a boardman feeder in the follower board. I loose a bit of space toward the end, but by that time, I don't have to feed anymore.
However, once the bees fill out the entire box, does one really need the follower board? I plan on leaving the honey in over winter, and take what they don't use in the Spring.
So, when I remove the honey in the Spring, do I reduce the size of the box again, by removing some bars and moving the follower board toward the entrance (entrance on one end of hive)?
Or, to keep them warm in winter, do I move the follower board toward the front in the fall?