How do you structure an ESOP and when should you decide to create that? Revenue or Profit Metric?

I would really like to structure my business as an ESOP (Employee Stock Ownership Plan — ESOPs are qualified retirement plans benefiting the selling owner, company and employees). 

If you have/had an ESOP can you please share as many details as possible on the pro's & con's? How you started it? Managed it? And presented the idea to your employees?

Look forward to hearing some feedback on this topic.