Sight reading is one of the few things you can work on without an instructor, so if that's the main focus of each lesson, this guy is definitely a flake. A teahcer should be giving you a firm foundation in the fundamentals of music:
PHYSICAL APPROACH - which is really technique. How to finger scales, arpeggios, smooth position shifts, use the fingers on your picking ahnd and fingerboard hand so that you can start any idea on any finger anywhere on the fingerboard.
UNDERSTANDING AND CONCEPT - which is really theory. Understanding why certain sounds behave they way they do, how notes relate to chords, how chords relate to chords, how to impose what you are hearing internally over what'shappening externally.
EAR TRAINING - probably the most important skill for a musician. this is really about hearing with enough CLARITY that you can identify WHAT you are hearing (especially if you are just hearing it in your imagination) and make it come out on your instrument. Identifying intervals and chords, being able to SING the intervals and chords, transcribing lines and solos. All of this is what being a musician is about.
And a teacher is the person who is going to tie all of these disparate skills together; who will put together a program that will work on ALL of these areas in a progressive and consistent way; who will give you the tools to have focused, progressive and consistent practice periods.
THAT'S the teacher you need to find. How close are you to Charleston? I'd highly recommend looking up a pianist/bassist named Frank Duvall there.
EDIT - oo, sorry. I thought I read
SC in your profile, but it's BC. My bad. There's a great bassist, Laurence Mollerup, who lives in the part of Canada that's closer to NY (

), he may have some suggestions for good teachers in your neck of teh woods. he posts here as LMBASS.