Skilled trades are generally union, the training is free through a union. If you go to a trade school or college, there are scholarships and sponsorships.
In my area electricians and plumbers apprentices make around $20/hr with raises every 6 months.
You may want to check their policy. In my state weed is legal and the electricians union drug tests but they don't care if weed is detected. I don't know about other unions, but I imagine they are similar.
If you are high all the time, don't waste anybody's time applying. If you are an occasional smoker or relax after a hard day, then you will be fine. They don't hand out jobs paying $55/hr to just anybody, you need to be on-time or early and prove you deserve a place in the union, so showing up high one time can torpedo that career real fast.
i really only use it for pain/anxiety after my shift. i currently have a union job in a school district, so i am in an okay place but i could do better in a trade. i might try to find out how strict these drug policies are (current job doesn't bother testing). thanks for your input!