1. is the wider the stem and hose port the better? if yes, which pipe has the largest of both parts.
[color=#ff0000]Technically yes, more room for air flow.[/color]
2. what is the ideal height of a pipe? i heard 28"-32" for cooling the smoke. is this including the base and the head, or is it without the base and/or the head?
[color=#ff0000]It's your preference, I had billowing clouds with my MYA QT now I have a 28"ish KM and I personally like my KM, it has lions.[/color]
3. is the thicker the hose the better? if so, which hose is the thickest? does the diameter of the tip of the hose matter (where you inhale)?
[color=#ff0000]Thicker the hose, not really, what you want is a wide hose. An the diameter meh not really.[/color]
4. what are the best coals? i heard about fantasia airflows.
[color=#ff0000]Natural wood or coconut hands down.[/color]
5. does foil thickness matter? if yes, what is the ideal thickness?
[color=#ff0000]Always used reynolds thick foil, been great for me.[/color]
6. how much juice should be squeezed out from the tobacco? what is ideal?
[color=#ff0000]Leave all that juicy goodness in there.[/color]
7. do you guys layer the tobacco? any rules?
[color=#ff0000]I personally don't unless I'm mixing flavors, I just put one on top of the other.[/color]
8. which vases are the largest? i heard the larger the base, the more smoke. i also heard another theory about surface area. what are the two theories?
[color=#ff0000]No and no, once again this is more of a personal preference thing, theres even a portable hookah that you can fit into a ltr soda bottle, doesn't mean anything for smoke amount.[/color]
[color=#FF0000]hope that helps [/color]