Watch the Hybrid Picking online guitar lesson by TrueFire from The Indispensable Toolbox for Guitarists
Hybrid Picking - Demonstration is a video guitar lesson presented by Brad Carlton and is sourced from Essential Techniques.
Three note-per-string alternate picking is covered in this lesson as well as voice hybrid picking. When playing three-notes-per-string, the picking scheme will reverse with each string change. By isolating the picking hand you can zero in on consistent pick strokes. Then add the notes with your left hand in whatever scale form you choose.