Been reading this thread with great interest. CL guys were my bread and butter for a long time. I was pretty careful and never got ripped off or put in a dangerous situation. Sure there were a few duds, but I struck gold a few times too.
A4A has worked well for me. It's all about being upfront about what you expect and what you are offering. And prices aren't set in stone. More than once I've decided I couldn't afford to meet a particular guy and he's immediately come back with a much better offer.
I've corresponded with a few guys on double list but haven't gotten lucky there yet. They are REALLY picky about what you are allowed to say in your ad.
I've had some luck on Grindr by putting "gen" in my profile... But I also get a lot of responses from guys who don't know what that means. Had a few awkward convos trying to figure out if a guy was talking to me because he was horny or just broke!
And finally, the day laborer fantasy... Have hired guys in the U-Haul parking lot to help me move apartments a few times and some of them were real hotties. They did good work and were really nice, so I never tried to get anything "extra". That will probably remain a fantasy...