Yes, there are those instructors out there that have no idea what they are talking about, unfortunately have no idea that they have no idea what they are talking about, and sadly really do think they know what they are talking about. And then there are those who are just in it to make a buck. I've only refused to sign off on one person over the years, and that was a renewal. Had an older lady who, when the qualification shoot came up, drew her gun, closed her eyes, turned her head to the side and pulled the trigger on her revolver 6 times as fast as possible. When I suggested that wasn't a particularly good way to do it she became rather agitated because that was what her original instructor had let her do and he hadn't had any trouble with it. In spite of my pleas she refused to shoot any other way. She may have gone back to him for renewal, but I wouldn't put my name on the paper. Everyone else I've been able to pull through, often with a lot of correction regarding use of force, legal issues, etc. but not with her.