Find a guy who used to repair semi trucks, lots of welding, painting, etc. Then pay them what a body shop would be paying them. We spoke with a guy at a technical school about recruiting, he said if we weren't going to pay a certified welder rate (20-30/hr), we wouldn't get any interested candidates. I lucked out with a guy that used to repair and repaint semi trucks for peterbilt.
I've also picked up several guys in a christian based recovery program, they live on a campus and get rides in if they don't have licenses. They've been the most polite, punctual, and soberist folks I've had the pleasure of working with. I've also had guys fall off that wagon, and you can't change the locks fast enough.
Indeed is great, especially if you include a pay range, say 15-25 based on experience.