Got it done yesterday and thought I'd share a few pictures of the process and how I wrap for winter. It was 31 F yesterday so I wrapped inside my barn but the big door was open.
First step is to push the hives together so each hive shares 2 walls with their neighbors to share heat and reduce surface area for heat loss. Two doubles to the right and first single with wax paper and Q excluder:
Second single:
Buffalo board. I use 2 small nails and just enough to hold them in place so the board actually has a small gap all the way around for vapor loss. You can see the hole I cut in the buffalo board as the main vent for carbon dioxide and water vapor. Note, the 2 singles are a tad taller due to the excluder:
Starting the wrap. I staple it to the boxes to hold it in place and cut a small flap that matches the opening for the main vent in the buffalo board. I staple there to make sure it stays open:
Folding the wrap:
Done. Note that the lids are just used to hold the insulation in place and a cord is used to keep the lids in place. My lids telescope front-to-back so I couldn't leave them on and butt the hives together: