Guern, dispersed basing isn't the problem but you do have a point. When Carterton South goes black for whatever reason and Carterton East is full, where do all the big jets go?
We had a problem here in the Lincolnshire Air Force with just Cranwell, Barkston, Coningsby, Waddington, Scampton when looking for a diversion.
When one was dodgy for weather surprisingly they all were. We often held Humberside, East Midlands, Manchester and Teeside and Newcastle. Real cost effective and you should have seen the bills every time we did a PD.