u/Expert-Panic731

I want to become an expert in the Duo run scheme. Im a gap scheme guy who is interested in the flexibility Duo adds to an offense. 10 personnel, 11 personnel doesn’t matter I want to learn all of it. The rules seem elusive to me. Is there a video or online clinic anyone could recommend that takes you through an entire duo install with multiple formations vs. multiple fronts? I want rules that work vs. any front, first steps, aiming points, etc.