Watch the Hybrid Picking online guitar lesson by TrueFire from Jazz Guitar Greatest Hits Vol. 3
Hybrid Picking is a video guitar lesson presented by Richard Hallebeek and is sourced from Scale Creativity Guidebook
Alternate picking with the pick and the middle finger is a very efficient way of playing three note per string scales. First start out with the pick and middle finger, then add in your ring finger. Be sure to make the sound and the volume of the different notes the same so you don't hear a difference between a picked note and a note played with your middle or ring finger.