That's a good point. Some tradesman I've known for years tell me that they do all they can to take all the work they can, even if they're crushed with work, be

That's a good point. Some tradesman I've known for years tell me that they do all they can to take all the work they can, even if they're crushed with work, because once you say no, people get out of the habit of calling you. Not sure how much that applies to the kinds of stuff HN readers do or care about, but for old-time trades it makes sense.