i have had great success over wintering nucs I use a 5 on 5 configuration using 2 5 frame nuc boxes I feed them up until they have the top nuc full and leave them to over winter in the spring I will feed a little to get them started then split
That is actually my configuration as well. In fact, I have two variations on that theme:
Configuration 1. I have standard 10 frame hive bodies that I have divided in half - one nuc on each side. They have a second, divided deep on top of them (which they are presently filling with honey). This makes for two 5-over-5 nucs in a single hive. I have 4 nucs this way.
Configuration 2. I have four, standard 5 frame nuc boxes that I have built '2nd stories' on. This results in the same 5-over-5 setup. I have four nucs this way as well (all next to one another).
My plan is to keep them all at 3-4 frames of bees/brood with the rest as honey until they cluster for winter. Trouble is, my winter is LONG (April is a winter month here). So I am expecting that sometime in March (at the latest), I am going to have to start feeding them. What is the best way to do this in terms of method and feed?