Well if I remember right the active chemical in Salvia loses potency while in smoke form, so you want to light it and get it in your lungs as quick as possible. Hookah's generally hold a lot of smoke in the chamber.
Here's a clippet from Salvia.net;
"Dosage
* Salvia leaves: ¼ gram – 1 gram
* Salvia extract 5x: 0.1 – 0.3 gram
* Salvia extract 10x: 0.05 – 0.15 gram
Salvia is best smoked in a pipe, preferably water-cooled (bong), but a small sized tobacco pipe will also do. Smoking in a cigarette or joint is also possible, but less effective. Make sure you are sitting down when you start smoking. Fill up the bowl with leaves. Salvia vaporizes at high temperatures. Therefore it is important to hold a flame directly over the leaves during inhalation. To achieve better combustion, you can use a torch lighter.
It is important to try to inhale the entire dose in as little inhalations as possible. Inhale slowly and deeply and keep the smoke in your lungs for 20 seconds or more before breathing out. This way the smoke is absorbed more efficiently by the lungs. Try not to pause between inhalations, so that the full dose is smoked in a short period of time. If you wait too long between inhalations, the salvinorin will be metabolized faster than it is ingested. Effects will come on within one or two minutes, reach their peak after 5-10 minutes and then gradually subside. The total duration of the experience can be 20 minutes to one hour.
If you have difficulties obtaining effects from normal leaves, you should try extracts. The main advantage is that it is easier to consume the entire dose in a small number of inhalations.
Another method of ingestion is vaporization. A vaporizer heats up the leaves without burning them, so it is smoother on the lungs. However, most marijuana vaporizers are not suitable for salvia, because they do not reach the required temperature. Vaporization can also be dangerous because it produces little smoke. Therefore it is difficult to judge how large a dose is inhaled. "
Hope that helps.
