From my previous questions I was introduced to Michael Bush. I have read almost his entire website and what a bunch of great info. I have been convinced to start in the same manner as I plan to continue. I want to go treatment free, ff, and top entrance. But in reading all the info and looking at pics I am still a little confused on the bottom setup for the hive. I was planning on using a screened bottom board but I also like the closed bottom board for feeding sugar if needed. Do you remove the hive and change the bottom board if you need to feed? How do you close off the bottom entrance if using a screened bottom board? Thanks for the help.