After reading the question regarding the service that connects writers with agents, and your answer that more or less poo-poos the idea, I’m wondering: if someone queries you with an unimpressive letter and you ‘pass,’ and they write again and their letter is better (but not great) – and you pass again - what if they wrote a rather spectacular letter the third time, and it impressed you? I guess what I’m asking really, is 1. would you hold the first two ‘bland’ attempts against them? 2. or, could perseverance pay off?
You can write the world's worst query letter and if you have good writing attached to it, I'm not going to pass. It's not the query letter that keeps you from "yes": it's the writing. I've said it before, here it is again: most query letters suck. Good writing trumps all.
That's why query letter services for novels are ...ahem... foolish and a waste of time. Non-fiction is a much different kettle of fish, but mostly the folks who read this blog are writing novels.
To specifically answer your question: I don't remember any of the stuff I pass over at that query stage. I barely remember the full novels I've passed on. I keep notes on the novels and the partials but not the queries.
Bottom line: FOCUS ON YOUR WRITING.