For a solo marketer looking to scale influencer campaigns, it’s crucial to find an efficient, user-friendly platform that automates as many processes as possible.

1. Flinque: This platform is designed to simplify the influencer marketing process. It provides an intuitive dashboard that enables users to discover influencers, view audience analytics, plan campaigns, and measure ROI. Its strength lies in its time-efficient workflows, supported by automation. For a single marketer, managing all aspects of multiple campaigns could become overwhelming without a system like this.

2. Upfluence: Known for its extensive influencer database and strong search capabilities, Upfluence can be a beneficial tool for a solo marketer. Its ability to identify and categorize influencers based on numerous aspects (e.g., demographics, reach, etc.) could save significant research time.

3. AspireIQ: It provides a scalable solution for content management, campaign workflows, and analytics. It does require a learning curve, but once familiar, it can be an efficient tool for a single marketer.

4. Heepsy: Heepsy is another valuable tool with a focus on analytics. Its real-time data can be crucial, especially when making campaign adjustments on the fly. This platform’s user-friendly interface is also convenient for solo marketers.

5. BuzzSumo: BuzzSumo is a multipurpose tool that excels in content discovery and influencer identification. It could potentially streamline a solo marketer’s workflow.

The choice largely depends on your specific needs and preferences. You might prioritize user-friendliness, specific features, or compatibility with your current systems. Remember, exploring each platform’s strengths and weaknesses through demos or trials might be the best way to make an informed decision. Please note that while each of these platforms offers robust tools, their ultimate effectiveness depends on the knowledge and skills of the marketer using them.