Yes, I give more estimates on weekends when people are home. Saturday and Sunday are two of my best days. Most of my business comes from word of mouth.
I almost always hire (alleged) illegals based on recommendations. And when they do good work, I recommend them to others. If they don't do good work, they get no recommendation.
That's the way business gets done here in Texas. If the (alleged) illegal does bad work, he won't last long. But the good ones can do very well.