My undergrad's committee letter strongly recommends to have a letter from a supervisor in a clinical experience. My issue is that in my case the supervisor would be a coordinator who doesn't know me at all. The letter would probably be incredibly generic/boilerplate. My question is, would it be better to have a letter, any letter from a clinical experience at least confirming that I did it and explaining what my role was, or would it be better to omit such a letter and have a letter from a shadowing doc who knows me very well instead?