I have tried and failed a few times myself. Usually I can get a little body high but I'm generally disappointed with results. So I am waiting for recommendations to be forthcoming.

For now, I can recommend the following based on my previous failures:

1. Figure out exactly what temp is ideal for activation.
2. Figure out how to achieve that temp.
3. Pre-cook bud (bake?).
4. Extract into fat.
5. LEAVE IT IN LONG ENOUGH. I was told four hours was minimum.

I think in the past I've been a little too hesitant to burn the stuff and a little too impatient to process it. Sooo that is all I have but I hope it helps you.

Decarboxylation