Other than posting relevant content, what are some best practices for LinkedIn profiles to help generate leads?

Offer insightful, timely information relevant to your followers. Post engaging content that encourages people to share their unique opinions and experiences on topics relevant to your area of professional expertise.

A few ideas:
1. Answering questions in LinkedIn groups or societies where your buyers participate or are members.
2. Hosting informal, virtual roundtable style discussions where you moderate only and pick topical areas of interest to allow the group to discuss and exchange best practices. No product, no pitches - just gathering people together to be seen as a hub of expertise and provide the benefit of networking and best practice sharing for potential prospects.
3. Try various alternate types of posts - short form, long form, questions, polls etc