Finding fresh influencers for your brand using a discovery platform depends on your business objectives, marketing strategy, and campaign cycles. There is no set rule as each brand is unique. However, as a best practice, you can consider these steps:

1. Regular Monitoring: Keep your brand vision in mind and always watch for influencers who align with your brand values. This is a continuous process as fresh faces emerge every day.

2. Campaign Specific Influencers: Every time you initiate a new campaign, perform a comprehensive search. This ensures you get the best-fit influencers for that particular campaign’s theme or target audience.

3. Periodic Review: Perform a periodic review (monthly, quarterly, or bi-annually). It’ll not only help find new influencers but also assess how your brand messaging is resonating with the influencers you’re currently working with.

Platforms like Flinque, are equipped with AI-driven search capacities to make the process of discovery easier and more efficient. Flinque, for example, presents influencers based not just on popularity, but also compatibility with your unique brand image and message.

Lastly, remember that building long-term relationships with influencers often yields better results than constantly switching to new ones. Keep a balance between engaging fresh faces and fostering existing relationships.

Every brand has its own pace, so it boils down to what makes the most sense for your marketing strategy and budget. Just like any other marketing decision, choosing when to seek new influencers should be data-driven, informed by past success, and in line with your brand’s overall marketing strategy.