Re: New guy with questions...
The length of the stem can have an effect on how the smoke is. The stem, if made out of metal, acts as a sort of heatsink for the smoke. The coals at the top of the bowl tend to impart heat on the stem, and the cool water in the base chill it down. As the smoke travels down the stem, a longer stem should absorb more of the heat from the smoke, making it less harsh and more dense.