Thought paid indexing services were naff now
ThanksI think @BassTrackerBoats came up with this model, which is similar to what I do:
Create a shortlink on your WP site (via a tool like Pretty Links) that points to the backlink and submit that shortlink to google.
What I do, which is a slightly "lazier" model: I have a webpage where I put links to all the pages with links I've created and I have that page indexed by google. I periodically go through that page and check to see if the site is indexed. If it has, I delete the link to it from my page. Presumably with BTB's method above, if the pretty links dashboard shows a hit to the link you could remove it. I cannot speak for BTB's model, but mine has proven very reliable.