I can say from past experience that the alcohol method works very very well. me and a friend had a couple ounces of stems, which we put in a jar, and then used a air pump from a fish tank, running the hose down through a hole in the lid into the jar to areate the mix, until we had is so the liquid was black and the stems were bleached bone white, losing all of their thc. then we used the heating method by putting the dish on a old casserole heating pan, and slowly cooked off the alcohol and when we were done, we scraped up everything and it looked like some really kewl green pollen. needless to say, the next few nights with candles, blacklights, and the beatles were awesome!