Re: thick heavy foggy clouds facor !!
really it comes down to the hookah, the brand of shisha, and the heat.
i have a cheap chinese hookah, and al waha tobacco, which really isnt a great set up for thick clouds, but with two golden quick lite coals, I am able to get some big clouds.
the biggest smoke you will ever see is gunna be with a Khalil Mamoon, Al fahker tobacco, and some natural coals.
also, I have found that if you inhale slowly you dont get as much smoke as if you do a pretty strong deep inhale sucking hard.
hope I could help.