have a good quantity of smoke

[hookahlover18]

hi everybody , first of all i would like to apologise for my bad english im an international student here in the us and its my second month
i wanna know whats the setup to have a good quantity of smoke without burning the maassel quickly :
i put a low quantity of water in the vase just at the level that the early head of the hose touches the water
i put a low quantity of small holes in the plastic that covers the bowl but each hole is next to the other one
i put the rounded coal exactly over the small holes
by doing that the smoke and maassel dont last a long time (max 10 mins)
 
what is ur setup guys that allows u to have a good quantity of smoke that last