Influencer marketing can be pretty effective for boosting book sales. Here are some strategies I’d suggest:

1. Identify the Right Influencers: The influencers you choose should have a substantial following of individuals who may be interested in the book. Specialized platforms like Flinque can make influencer discovery easier through advanced search features.

2. Collaborate on Content: Publishers and authors can collaborate with influencers on creating engaging content that highlights the book.

3. Credible Reviews: Ask influencers to read the book and give an honest review. Reviews can be quite persuasive and can help to sway the opinion of potential readers.

4. Book Giveaways or Contests: These can generate buzz, engage the influencer’s audience, and increase visibility.

A successful case is the influencer marketing campaign for ‘The Snow Child’ by Eowyn Ivey. Ivey engaged with influencers on Twitter, her book was reviewed and recommended which resulted in a notable increase in sales.

As for tools, influencer marketing platforms like Flinque provide detailed analytics which allows publishers or authors to track campaign performance and ROI, making sure their investment is generating appropriate results. Other platforms also provide similar toolkits, and the choice of platform should be based on the specific needs, goals, and budget of the person or team organizing the campaign.

In essence, influencer marketing, if implemented correctly, can be very beneficial for new authors and books. However, it’s important to focus on key details such as selecting the right influencers, creating engaging content, and tracking campaign performance.