I am teaching a friend to play the upright bass. I don't want to pass my limitations on to her. I have terrible intonation, but pretty good at hearing harmonic structure. I am tied to looking at the dots I have placed on the side of the neck. I have tried for 20+ years to match pitches, but have found it not fruitful. Anyway, enough about me. My friend is at the point where she can play from chord charts, but is tied to the markers on the side of the neck. My question is, what technique/ exercises are used to make the transition from being able to visualize the pattern of scales, to actually playing them in tune without the visual aid of the markers on the neck? I appreciate any assistance from the collective experience here at Talkbass. Thanks!