I only have the one apiary. I take drone brood from preferred colonies and put it in others where I don't want them making drones.
This year I am hoping to link up with Ulster Bee Improvement Group.
Their mating apiary is only 7 miles from me and they have some Galtee queens so I hope to take some of my Apideas there. Some of my queens probably come into contact with those drones anyway given the relatively short distance involved.

Gavin - maybe you could make a few comments about the dangers of inbreeding and steps you can take to avoid it. I know there are also caveats attached to selecting on DrawWing plots alone.