I found that hardly any rolling is needed. I basically prod the dough into the rough tear shape using fingertips and then pick it up and 'clap' it between my hands which stretches it dead thin.
The dough consistency is crucial though I found, if in doubt just leave it all day to rise to see the difference. It becomes really light and puffy. I started off with Chris youtube recipe but sound it wasn't sweet enough and used a bit too much yog (15 tblspoons) so I modified it as follows which makes 8 naans:
500g plain flour
225ml luke warm water
5 tblsp yog
4 tblsp veg oil
4.5 tbsp sugar
teaspoon dried bakers yeast
a tad under a teaspoon salt.
1.5 tsp kalonji seeds
method:
1. Mix sugar, water and yeast and let it froth (10 mins).
2. dump everything in the mixer bowl and mix until its a dough ball then let it rest. The mix takes 20 seconds using an electric mixer.
3. After half an hour let it mix real well until silky smooth, you may need more water/flour. Takes 3 mins on my mixer.
4. oil a bowl and dump the dough into it. Cover with cloth and leave for 4 hours or longer, the longer the better. Aim for a trebling in size.
5. Punch it down then leave it again for a couple hours.
This works perfect for me, I cook using a tawa to get the bottom done then under the grill and it bubbles like a champ. Light brish with ghee and its better than the real thing! Can't see any need for a tandoor to be honest as this is 99% there.
I'm going to make another batch and freeze it to see how well it defrosts. That way can make a massive batch of say 30 nanns and freeze the lot.