Generate a full detail guide for a visionary founder on hiring a 'second-in-command' (COO or Integrator). The guide should be strategic and focused on the founder-operator relationship. It must include detailed sections on: 1. A self-assessment for the founder to determine if they are ready for this role. 2. How to create a scorecard for the ideal candidate, focusing on complementary skills. 3. A detailed interview process designed to test for operational excellence and cultural fit. 4. A framework for successfully onboarding the new leader and letting go of responsibilities. Please include a disclaimer about the importance of this hire.