Re: Coals moving?
yep encountered this before, get a base cover or like a welcome mat and place it under you hookah, also get a diffuser, which will make smaller bubbles and your hookah wil vibrate less.
Do you have music on with a bass going?
turn the low frequency effect down if you do.
when you inhale, inhale more gentle
also you mentioned perfectly tight, which is normally ideal
but lets use the laws of physics for a moment:
if you put in less tobacco, the foil wont have to be perfectly tight cause it will be ok if it dips down wherever you put the coals. the coals will have alot more trouble moving when gravity is holding them in place.
Hookah Pro Legitimate hookah without the bias.