How would we secure it? Are you thinking we'd use Fidelius?

Sally-Anne Perks is fostered on a farm, of sorts. There's at least one muggleborn there (without a wand) and it doesn't sound particularly well guarded. It's in Coventry. I don't know that it's particularly defensible, unless we could make it disappear off the map with Fidelius, and from what I've heard, it might be too big for that.