How to encourage the Queen to lay male bees?

[Curly green finger's]

I've seen just as much drone brood slap bang in the centre of frames which had worker foundation

I have to in the first super above the brood whole frames.

 

[RichardK]

This might be a silly question because I have no experience of them, but do buckfasts breed true?
I have seen it described that that they are hybrids, or at least were in Bro Adams time, and in other animals breeding hybrids with each other can give you unpredictable results.

You're spot on - they are hybride & don't breed trier. However, i was mulling over what i could do to increase the odds of retaining as much 'Buckfast' as i could.