Hey Ken I'm new here too, I can relate to the wanna bees I m in Indiana and they hire whoever will do it. Lol I'm originally from CA where they sew if ur not perfect. So I understand the frustration! They do everything bkwds and don't care! Sad really.
customers out here want something for nothing and they pay very minimal. It's gotten to ware u have people sign off on any future problems you warn against. I've found the ones who want it done right will wait it out to get it done right. The ones who want it done no matter what will sign off on the warning. Then it's in their hands. Make sure you write all the warnings for them to sign off on. And do the best you could! People don't know enough and some don't care because it will be on the installer. U just have to let them go and they will find the huge problems it becomes and some will call you back and take you seriously. Some become dedicated customers and appreciate your professional knowledge, they will pay the fair price. Their is fakes in every trade we just have to prove our work without all the hype of word and word of mouth will keep you busy.
Welcome here and good luck bud!