Yes, the recipe of green dragon in this forum is very good. It really works.
Anyway, answering your question about the thc activation: the boiling point of thc is about 200 C, while the boiling point of alcohol is 78 C. So, even if you heat the alcoholic solution of thc until the alcohol boils, the thc will not be lost by evaporation.
BUT, the temperature for activation of thc (im assuming youre talking about the decarboxylation) is 105 C, greater then alcohol's boiling point, so if you want activate it, you must do it before mixing it with the alcohol.
Look at the recipe of green dragon at the sticky thread. There everything is very well explained.
And good luck!

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