Re: shisha and air
yes always stir ur your shisha. Reason being its because all the juices leak down to the bottom...and the juices are the flav of the shisha is its what keeps it moist.
I'd say only use a skewer or a fork to mix cuz if you use your tongs and move your coals with the tongs, it'll smell burnt cuz there is shisha on the tongs :P
BTW imo, never pack a bowl with tongs. It doesn't really fluff up the tobacco and it kinda packs it down=no airflow or smoke.