Bridget, that's a question I meant to ask Murray when I saw him on Saturday. I suppose you can remove some of the frames with stores, and replace them with foundation. You can then use the store frames again in springtime, or when you need them for nucs later next year.

Alternatively, perhaps, once they've drawn out a frame of foundation, but before they're filling it with stores, remove it for next year, and return the frame with stores. The problem is, the weather is getting worse, and I think one might not want that kerfuffle of changing combs around in cold weather.