I've posted about this previously, but I submitted Double Witness (the book Harlequin bought) to the MUSETRACKS Agent Shop last year. My book received a partial request from an agent which didn't result in landing said agent, but it was a great experience. If you're looking for an agent/ fun pitching practice, check it out here ! And, to note, if you pitch and aren't picked, consider submitting via the slush pile. What isn't right for one agent doesn't mean not right for another agent / editor. Let me know how it goes!