I think you can post messages on their profile pages without a minimum post count. If you go to the main forum page and scroll to the bottom it will give a list of online members. The mods names are in blue.
Until a member has 50 posts they cannot Private Message another member (even a Mod). You would have to either leave a Visitor Message (which I realize you do not want to do) or send an email to email@example.com
I do know that some of the mods have fishlore email addresses, but for some reason I could never gte mine to work.