Sorry I haven't blogged in a while. I just got busy with other things.
So, here's an idea that I've been using with some of my students. I've started calling it "gliss finding"
The Problem: trying to lip the notes into tune instead of finding the pitch with the slide. I believe this can cause a loss of centering and resonance.
The Solution: by glissing around the note while listening carefully for a resonant full tone, then stopping in the position, you can find the right pitch while your center of resonance stays "in the pocket."