hehe nice question
We DTD in the shower, or in the bed but I put Ash in his cot haha

I wouldn't co sleep with bub in the middle if DH is that heay a sleeper and drinks beer at night. It is dangerous. What I would do is buy one of those 3 sided cots that attach to your bed so bub is on the other side of you still within reach and you don't have to pick bubs up or anything because they will be right there, at your height, within reach.

OR you could buy one of those side rails, the ones that sit on top of the mattress so there is no gap (safety first I think?) and have bubs between you and the rail.

I really wouldn't sleep with bubs in the middle though. And a doona is really a no go. If you had a side rail you could fold it under the mattress or rail and have bub on top.

I co sleep, but I have a double bed and a king doona so it helps with the folding under the bed and having bub on top because when I move there is heaps of spare doona.

Did that make sense? sorry I am so tired.