@Ant great question.
If you are active on other forums you can always share our site with other members. If you do this, make sure you use a private message because forum admins generally frown on this sort of recruitment. They worked hard to get their members and they don’t want to lose them. Forums that are heavily moderated are usually a good target of opportunity. Members get fed up with mods and admins who behave like zealots.
If you are active on the few news sites that still have comment sections, you can always share a link that way. If you don’t want to have your social media accounts exposed, make sure you are not logged in to a commenting engine that uses your social media credentials.
Word of mouth is always good - but I understand not wanting to reveal your political views to friends, family, and business colleagues.
I’m in the process of getting a professional 60-second commercial made that will air on talk radio shows around the country. To really grow our community, I can’t depend on the typical methods and tools that most folks get to use. Many of the comments here result in Google search penalties and bans on social media sites. That’s unfortunate but there is nothing we can do about it. I’m not going to change how this site is administered to comply with the political views of third parties. My challenge is to adapt to the environment.