Best place to get contractors?

[Daniel Oren]

Hello, I am new here to BP. This is my first post (I think, maybe 2nd?). Anyway, I have a question: I currently am flipping my 2nd, 3rd, and 4th flips simultaneously. I sold my first in January of this year. I really just have a question about contractors. What are the best ways to find good contractors? I know of Home Advisor, Thumbtack, and Yelp. Are there other good websites for this? Also, I currently have a general contractor that I believe is just working way too slow. I’m considering getting rid of him and finding a new general contractor. How lenient should I be with these guys? Should I be expecting to find a great contractor that can work all 3 houses, 5-7 days a week, and not try to screw me in any way? Or am I just dreaming and I should be more lenient with my expectations? What does everyone think? Also, where do the general contractors get their workers from? Do they just post an ad on Indeed / Monster / craigslist etc? Or a different way? Can I get workers the same way they do? Or I need to be a general contractor? TIA. D