Mr. Gweilo 420
Dude
Regarding the bowls I have stuck with the standard bowls and have been getting good results. Having said that I usually end up stirring to get there which is a pain in the arse. The most thorough extraction for me though has been with the hookah. Usually I will hit a bowl until there is no or almost no visible vapor. With the hookah though I have to monitor the taste closely or I find it will just keep extracting until I reach combustion. I have reduced the temperature quite a lot though from my original setting. I find 78v a good temp now. With the bubbler I still like to go to about 107v and try not to use boost. It is always so tempting to hit the boost though but I combusted so many times I finally learnt my lesson.