I may or have not undergone some abject failures at experimentation with creating crude concentrates, utilizing Everclear as a solvent agent... but I digress... The recipe I was following called for decarbing plant at 165C for 30 minutes. YMMV it seems.
Anyway, can't wait for things to go legal so I can spend the rest of my life on this planet earning a green thumb, and live happily ever after.
The problem with legal status of THC etc. is that it might change back again after legalization and then your business and also passion is fucked.
In my country we had things eased up as long as the government was leftish. The migration/ISIS issue changed that and we were close to get the distribution of shoots banned before the government was de-elected this year by the parliament. Even CBD farmers would have been criminalized over night if the review of the law would have went through.
AFAIK, in the netherlands you were forced to register if you wanted to buy at coffeeshops, after the government changed to the right (Geert Wilders). No more weed tourism.
I was there in the 90s and runners were all over the redlight district and near most coffeeshops i visited. I don't think the registration solved these issues but i also don't know if they kept it up.